Question

我试图修改我的网站背景，因为你可以在代码中看到，让它更活跃。但我正在努力寻找为什么我的背景覆盖了我所拥有的元素几个小时。简单地说，它出现在一切之前。为什么会这样？

的style.css

/* General Styles */
html{
background-color: #fff;
   background-size: cover;
   height:100%;
}

body {
   color: #C0C0C0;
   font-family: Arial, san-serif;
}


/* Contact Form Styles */
h1 {
   margin: 10px 0 0 0;
}
h4{
   margin: 0 0 20px 0;
}
#contact-form {
   background-color:rgba(72,72,72,0.7);
   padding: 10px 20px 30px 20px;
   max-width:100%;
   float: center;
   left: 50%;
   position: absolute;
   margin-top:30px;
   margin-left: -260px;
   border-radius:7px;
   -webkit-border-radius:7px;
   -moz-border-radius:7px;
}
#contact-form input,   
#contact-form select,   
#contact-form textarea,   
#contact-form label { 
   font-size: 15px;  
   margin-bottom: 2px;
   font-family: Arial, san-serif;
} 
#contact-form input,   
#contact-form select,   
#contact-form textarea {
   width:100%;
   background: #fff;
   border: 0;
   -moz-border-radius: 4px;
   -webkit-border-radius: 4px;
   border-radius: 4px;
   margin-bottom: 25px;
   padding: 5px;
   color: #000;
}  
#contact-form input:focus,   
#contact-form select:focus,   
#contact-form textarea:focus {  
   background-color: #E5E6E7; 
}  
#contact-form textarea {
   width:100%;
   height: 150px;
}
#contact-form button[type="submit"] {
   cursor:pointer;
   width:100%;
   border:none;
   background:#991D57;
   background-image:linear-gradient(bottom, #8C1C50 0%, #991D57 52%);
   background-image:-moz-linear-gradient(bottom, #8C1C50 0%, #991D57 52%);
   background-image:-webkit-linear-gradient(bottom, #8C1C50 0%, #991D57 52%);
   color:#FFF;
   margin:0 0 5px;
   padding:10px;
   border-radius:5px;
}
#contact-form button[type="submit"]:hover {
   background-image:linear-gradient(bottom, #9C215A 0%, #A82767 52%);
   background-image:-moz-linear-gradient(bottom, #9C215A 0%, #A82767 52%);
   background-image:-webkit-linear-gradient(bottom, #9C215A 0%, #A82767 52%);
   -webkit-transition:background 0.3s ease-in-out;
   -moz-transition:background 0.3s ease-in-out;
   transition:background-color 0.3s ease-in-out;
}
#contact-form button[type="submit"]:active {
   box-shadow:inset 0 1px 3px rgba(0,0,0,0.5);
}
input:required, textarea:required {  
   box-shadow: none;
   -moz-box-shadow: none;  
   -webkit-box-shadow: none;  
   -o-box-shadow: none;  
} 
#contact-form .required {  
   font-weight:bold;  
   color: #E5E6E7;      
}

/* Hide success/failure message
   (especially since the php is missing) */
#failure, #success {
   color: #6EA070; 
   display:none;  
}

/* Make form look nice on smaller screens */
@media only screen and (max-width: 580px) {
   #contact-form{
      left: 3%;
      margin-right: 3%;
      width: 88%;
      margin-left: 0;
      padding-left: 3%;
      padding-right: 3%;
   }
}

#bg {
        -moz-transform: scale(1.0);
        -webkit-transform: scale(1.0);
        -ms-transform: scale(1.0);
        transform: scale(1.0);
        -webkit-backface-visibility: hidden;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        z-index: 1;
    }

        #bg:before, #bg:after {
            content: '';
            display: block;
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        #bg:before {
            -moz-transition: background-color 2.5s ease-in-out;
            -webkit-transition: background-color 2.5s ease-in-out;
            -ms-transition: background-color 2.5s ease-in-out;
            transition: background-color 2.5s ease-in-out;
            -moz-transition-delay: 0.75s;
            -webkit-transition-delay: 0.75s;
            -ms-transition-delay: 0.75s;
            transition-delay: 0.75s;
            background-image: linear-gradient(to top, rgba(19, 21, 25, 0.5), rgba(19, 21, 25, 0.5)), url("http://www.wise-company.com/pref2/inf_permise/Rezervari/images/overlay.png");
            background-size: auto, 256px 256px;
            background-position: center, center;
            background-repeat: no-repeat, repeat;
            z-index: 2;
        }

        #bg:after {
            -moz-transform: scale(1.125);
            -webkit-transform: scale(1.125);
            -ms-transform: scale(1.125);
            transform: scale(1.125);
            -moz-transition: -moz-transform 0.325s ease-in-out, -moz-filter 0.325s ease-in-out;
            -webkit-transition: -webkit-transform 0.325s ease-in-out, -webkit-filter 0.325s ease-in-out;
            -ms-transition: -ms-transform 0.325s ease-in-out, -ms-filter 0.325s ease-in-out;
            transition: transform 0.325s ease-in-out, filter 0.325s ease-in-out;
            background-image: url("http://www.wise-company.com/pref2/inf_permise/Rezervari/images/bg.jpg");
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
            z-index: 1;
        }

        body.is-article-visible #bg:after {
            -moz-transform: scale(1.0825);
            -webkit-transform: scale(1.0825);
            -ms-transform: scale(1.0825);
            transform: scale(1.0825);
            -moz-filter: blur(0.2rem);
            -webkit-filter: blur(0.2rem);
            -ms-filter: blur(0.2rem);
            filter: blur(0.2rem);
        }

        body.is-loading #bg:before {
            background-color: #000000;
        }
* {
   box-sizing:border-box;
   -webkit-box-sizing:border-box;
   -moz-box-sizing:border-box;
   -webkit-font-smoothing:antialiased;
   -moz-font-smoothing:antialiased;
   -o-font-smoothing:antialiased;
   font-smoothing:antialiased;
   text-rendering:optimizeLegibility;
}

这是样式，我在html文件中设置此背景，如下所示：

<div id="bg"></div>

我的网站如下：http://www.wise-company.com/pref2/inf_permise/Rezervari/inmatriculare.php

你能弄清楚为什么会这样吗？谢谢！

Answer 1

尝试更改z-index: -1以便具有背景图像的div将落后于所有其他元素。

Answer 2

这很容易，只需在你的div＃bg将你的z-index从1改为-1。马上修复它。

背景叠加在HTML / CSS中形成

2 个答案: