如何在输入框周围制作彩色渐变光？

Question

我知道对于盒子周围的蓝色光芒，我们只需要将下面的代码应用到我们的CSS：

.glowing-border {
    border: 2px solid #dadada;
    border-radius: 7px;
}

.glowing-border:focus { 
    outline: none;
    border-color: #9ecaed;
    box-shadow: 0 0 10px #9ecaed;
}

---

现在我想把我的输入框提升到一个新的水平。

我希望它看起来像这样 - 而不是蓝光。 我希望它有一个漂亮的彩虹渐变效果。

那里有没有CSS专家认为这对我来说是可行的？

---

如果有人对如何以不同方式完成此操作有任何建议，则不必是CSS 请发表评论或回答。

Answer 1

这是一个svg解决方案。

input元素位于svg内部且透明，因此svg看起来像是input元素的边框。

---

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input {
  position: absolute;
  color: black;
  background: transparent;
  border: none;
}
.input-container-1,
.input-container-2,
.input-container-3 {
  overflow-x: hidden;
}
.input-container-1 {
  position: relative;
  left: -100px;
  width: 640px;
}
.input-1 {
  width: 360px;
  height: 24px;
  top: 35px;
  left: 136px;
  font-size: 20px;
}
.input-container-2 {
  position: relative;
  left: 15px;
  width: 400px;
}
.input-2 {
  width: 217px;
  height: 17px;
  top: 20px;
  left: 87px;
  font-size: 15px;
}
.input-container-3 {
  position: relative;
  left: 115px;
  width: 200px;
}
.input-3 {
  width: 110px;
  height: 9px;
  top: 24px;
  left: 43px;
  font-size: 9px;
}

＆＃13;

<svg width="0" height="0">
  <defs>
    <linearGradient id="linearGradient4466">
      <stop style="stop-color:#3d0f00;stop-opacity:1" offset="0" />
      <stop offset="0.11958463" style="stop-color:#3b3d00;stop-opacity:1" />
      <stop offset="0.29933503" style="stop-color:#013d00;stop-opacity:1" />
      <stop offset="0.52438051" style="stop-color:#003d3d;stop-opacity:1" />
      <stop offset="0.69545531" style="stop-color:#00003d;stop-opacity:1" />
      <stop offset="0.88148439" style="stop-color:#3d003d;stop-opacity:1" />
      <stop style="stop-color:#38000d;stop-opacity:1" offset="1" />
    </linearGradient>
    <linearGradient id="linearGradient3978">
      <stop offset="0" style="stop-color:#ffd4bf;stop-opacity:1" />
      <stop style="stop-color:#f8ffbf;stop-opacity:1" offset="0.11958463" />
      <stop style="stop-color:#bfffc0;stop-opacity:1" offset="0.29933503" />
      <stop style="stop-color:#bffbff;stop-opacity:1" offset="0.52438051" />
      <stop style="stop-color:#c2bfff;stop-opacity:1" offset="0.69545531" />
      <stop style="stop-color:#febfff;stop-opacity:1" offset="0.88148439" />
      <stop offset="1" style="stop-color:#ffbfd2;stop-opacity:1" />
    </linearGradient>
    <linearGradient id="linearGradient3924">
      <stop style="stop-color:#ffd4bf;stop-opacity:1" offset="0" />
      <stop offset="0.03125" style="stop-color:#ffd5bf;stop-opacity:1;" />
      <stop offset="0.0625" style="stop-color:#ffd6bf;stop-opacity:1;" />
      <stop offset="0.125" style="stop-color:#ffd8bf;stop-opacity:1;" />
      <stop offset="0.25" style="stop-color:#ffddbf;stop-opacity:1;" />
      <stop offset="0.5" style="stop-color:#ffe6bf;stop-opacity:1;" />
      <stop style="stop-color:#fff8bf;stop-opacity:1" offset="1" />
    </linearGradient>
    <linearGradient xlink:href="#linearGradient3924" x1="1390.6012" y1="-164.2403" x2="1397.4197" y2="-164.24028" gradientUnits="userSpaceOnUse" />
    <linearGradient xlink:href="#linearGradient3978" gradientUnits="userSpaceOnUse" x1="1390.6012" y1="-164.11403" x2="1489.2173" y2="-164.49281" gradientTransform="matrix(1.0010509,0,0,1.0060612,-93.175264,9.3454472)" />
    <linearGradient xlink:href="#linearGradient3978" gradientUnits="userSpaceOnUse" gradientTransform="matrix(1.0010509,0,0,1.0060612,-93.10075,-49.919881)" x1="1390.6012" y1="-164.11403" x2="1489.2173" y2="-164.49281" />
    <linearGradient xlink:href="#linearGradient4466" gradientUnits="userSpaceOnUse" gradientTransform="matrix(1.0010509,0,0,1.0060612,-93.100798,-49.919876)" x1="1390.6012" y1="-164.11403" x2="1489.2173" y2="-164.49281" />
    <filter id="filter4482" color-interpolation-filters="sRGB" x="-0.30000001" y="-0.30000001" width="1.6" height="1.6">
      <feBlend blend="normal" mode="screen" in2="SourceGraphic" result="result93" />
      <feComposite in="SourceGraphic" operator="over" result="result92" in2="result93" />
      <feGaussianBlur stdDeviation="2" result="result91" />
    </filter>
    <linearGradient xlink:href="#linearGradient3978" id="linearGradient4494" gradientUnits="userSpaceOnUse" gradientTransform="matrix(1.0010509,0,0,1.0060612,-93.10075,-49.919881)" x1="1390.6012" y1="-164.11403" x2="1489.2173" y2="-164.49281" />
    <linearGradient xlink:href="#linearGradient4466" id="linearGradient4496" gradientUnits="userSpaceOnUse" gradientTransform="matrix(1.0010509,0,0,1.0060612,-93.100798,-49.919876)" x1="1390.6012" y1="-164.11403" x2="1489.2173" y2="-164.49281" />
    <g id="shape" transform="translate(0,-1028.3622)">
      <g transform="translate(-1268.4495,1255.3775)">
        <path d="m 1300.3557,-222.51533 c -1.0545,0 -1.9062,0.85169 -1.9062,1.90625 l 0,11.1875 c 0,1.05456 0.8517,1.90625 1.9062,1.90625 l 96.1876,0 c 1.0545,0 1.9062,-0.85169 1.9062,-1.90625 l 0,-11.1875 c 0,-1.05456 -0.8517,-1.90625 -1.9062,-1.90625 l -96.1876,0 z m 0.6563,1 94.8437,0 c 0.8743,0 1.5938,0.68825 1.5938,1.5625 l 0,9.84375 c 0,0.87425 -0.7195,1.59375 -1.5938,1.59375 l -94.8437,0 c -0.8743,0 -1.5625,-0.7195 -1.5625,-1.59375 l 0,-9.84375 c 0,-0.87425 0.6882,-1.5625 1.5625,-1.5625 z"
        style="fill:url(#linearGradient4494);fill-opacity:1;stroke:none" />
        <path style="fill:url(#linearGradient4496);fill-opacity:1;stroke:none;filter:url(#filter4482)" d="m 1300.3557,-222.51533 c -1.0545,0 -1.9062,0.85169 -1.9062,1.90625 l 0,11.1875 c 0,1.05456 0.8517,1.90625 1.9062,1.90625 l 96.1876,0 c 1.0545,0 1.9062,-0.85169 1.9062,-1.90625 l 0,-11.1875 c 0,-1.05456 -0.8517,-1.90625 -1.9062,-1.90625 l -96.1876,0 z m 0.6563,1 94.8437,0 c 0.8743,0 1.5938,0.68825 1.5938,1.5625 l 0,9.84375 c 0,0.87425 -0.7195,1.59375 -1.5938,1.59375 l -94.8437,0 c -0.8743,0 -1.5625,-0.7195 -1.5625,-1.59375 l 0,-9.84375 c 0,-0.87425 0.6882,-1.5625 1.5625,-1.5625 z"
        />
      </g>
    </g>
  </defs>
</svg>

<div class="input-container-1">
  <svg width="640" height="96" viewBox="0 0 160 24">
    <use xlink:href="#shape" />
  </svg>
  <input type="text" class="input-1" value="This is the input box" />
</div>
<div class="input-container-2">
  <svg width="400" height="60" viewBox="0 0 160 24">
    <use xlink:href="#shape" />
  </svg>
  <input type="text" class="input-2" value="This is the input box" />
</div>
<div class="input-container-3">
  <svg width="200" height="60" viewBox="0 0 160 24">
    <use xlink:href="#shape" />
  </svg>
  <input type="text" class="input-3" value="This is the input box" />
</div>

＆＃13;

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Answer 2

我只想用背景图片来做：

#it:focus {
   outline: none;
   border: none;
   box-shadow: none;
   padding: 20px 0px;

   background: url('http://i.stack.imgur.com/XbM0u.png') no-repeat;
   background-size: 100%;
}

调整填充以匹配您制作的实际图像（更多地关注宽高比而不是像素，以便它可以很好地缩放），然后针对非聚焦情况执行相同的操作。 #it​​是一个输入顺便说一句。您应该可以使用包装元素来完成它。

只要你的百分比填充正确，

background-size就会使它适合所有人。

Answer 3

最初我建议使用带有CSS渐变的border-image：

#t {
  width: 200px;
  height: 50px;
  border-image-source: -moz-linear-gradient(left, #f932fc 0%, #bc26bf 10%, #7db9e8 41%, #85f78f 61%, #eff484 81%, #ff8c8e 100%);
  border-image-source: -webkit-linear-gradient(left, #f932fc 0%, #bc26bf 10%, #7db9e8 41%, #85f78f 61%, #eff484 81%, #ff8c8e 100%);
  border-image-source: -ms-linear-gradient(left, #f932fc 0%, #bc26bf 10%, #7db9e8 41%, #85f78f 61%, #eff484 81%, #ff8c8e 100%);
  border-image-source: linear-gradient(to right, #f932fc 0%, #bc26bf 10%, #7db9e8 41%, #85f78f 61%, #eff484 81%, #ff8c8e 100%);
  border-image-width: 2px;
  border-image-repeat: stretch;
  border-image-slice: 2;
}

<input type="text" id="t">

但后来我意识到你想要一个真正的发光效果。在这种情况下，您仍然可以将border-image与实际图片一起使用。

#t {
  width: 694px;
  height: 174px;
  border-image-source: url(http://i.stack.imgur.com/w9h1v.png);
  border-image-width: 45px;
  border-image-repeat: stretch;
  border-image-slice: 81;
}

<input type="text" id="t">

Answer 4

我认为你可以通过使用另外两个divs来做到这一点。一个是包裹（也有背景渐变），羽毛效果带有白色插入框阴影，输入区域后面有一个div，带有白色背景和外框阴影。

                           

我认为你形成的背景颜色是白色的。

.rainbowWrap {
    width: 200px;
    background: //your gradient...
    padding: 4px;
    box-shadow: inset 0px 0px 5px 3px white;
    border-radius: 2px;
    position:relative;
    z-index: 1;
}

.rainbowBg {
    width: 184px;
    height:15px;
    background: white;
    position:absolute;
    top: 10px;
    left: 10px;
    box-shadow: 0px 0px 7px 2px white, 0px 0px 13px 2px white;
    border-radius: 4px;
    z-index: 2;
}

.rainbow {
    width:186px;
    background:transparent;
    border:1px solid rgba(255,255,255,0.5);
    padding: 5px;
    border-radius: 4px;    
    outline:none;
    display: block;
    position:relative;
    z-index: 500;
    color:#666;
}

请注意，我只编写了代码，只在Google Chrome中进行了测试。

小提琴：http://jsfiddle.net/b03acbdu/5/