背景100％

Question

我正在建立一个网站，我遇到了一个问题。 网站顶部的图像大小没有达到100％，在计算机中一切正常，但在手机上它会将此栏留空。 我尝试了一切，研究了论坛，尝试了一切，但找不到解决方案。

此布局无响应，仅适用于移动屏幕。 下面是该网站的截图和部分代码。

如果有人想访问该网站，请点击以下链接： http://www.cr6arquitetura.com.br/

IMAGE MOBILE WEBSITE

body {
  margin: 0 auto;
  padding: 0 auto;
  font-family: 'Noto Sans', sans-serif;
}

h1 {
  font-size: 5.0em;
  color: #efc500;
}

h3 {
  font-size: 2.5em;
  color: #000000;
  font-weight: normal;
  font-style: italic;
}

h4 {
  font-size: 1.5em;
  color: #000000;
  font-weight: normal;
  position: relative;
  bottom: 25px;
}

#bgmain {
  background: url(img/main.jpg) no-repeat;
  background-color: #efc500;
  background-position: center center;
  background-attachment: fixed;
  background-size: cover;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -ms-background-size: cover;
  -o-background-size: cover;
  margin: 0 auto;
  padding: 0 auto;
  width: 100%;
  height: 100%;
}

#barra {
  height: 130px;
  width: 100%;
  background-color: white;
  opacity: 0.8;
  filter: alpha(opacity=80%);
}

#logo {
  float: left;
  margin-left: 5px;
}

#menu ul {
  margin: 0px auto;
  margin-top: 50px;
  list-style: none;
  float: right;
  margin-right: 5px;
}

#menu ul li {
  display: inline;
}

#menu ul li a {
  font-size: 18px;
  color: #efc500;
  font-weight: bold;
  margin-left: 30px;
  text-decoration: none;
}

#menu ul li a:hover {
  border-bottom: 6px solid #efc500;
}

#textomiddle {
  width: 1050px;
  margin: 0 auto;
  margin-top: 150px;
}

#botao {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  width: 350px;
  height: 70px;
  display: block;
  text-align: center;
  margin-bottom: 30px;
  background-color: #FFFFFF;
  border-radius: 10px;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  opacity: 0.8;
  filter: alpha(opacity=80%);
}

#botao:hover {
  background-color: #FFFFFF;
  opacity: 1;
  filter: alpha(opacity=100%);
}

a.link {
  text-decoration: none;
  display: inline-block;
  color: #efc500;
  font-family: 'Noto Sans', sans-serif;
  margin-top: 17px;
  font-size: 25px;
}

<link href="https://fonts.googleapis.com/css?family=Noto+Sans:400,400i,700" rel="stylesheet">

<div id="bgmain">
  <!-- THIS IS THE MAIN DIV FOR THE BACKGROUND IMAGE-->
  <!-- -->
  <div id="barra">
    <!-- THIS IS THE WHITE BAR ON TOP OF WEBSITE-->
    <div id="logo">
      <!--THIS IS THE LOGO ON TOP LEFT -->
      <img class="logo" src="img/cr6logo.png" alt="logo">
    </div>
    <!-- DIV LOGO END-->
    <nav id="menu">
      <!-- THIS IS THE MENU -->
      <ul>
        <li><a href="#">HOME</a></li>
        <li><a href="#">NOSSOS TRABALHOS</a></li>
        <li><a href="#">QUEM SOMOS</a></li>
        <li><a href="#">CONTATO</a></li>
      </ul>
    </nav>
    <!-- MENU END-->
  </div>
  <!-- BARRA END -->
  <div id="textomiddle">
    <!-- This is the DIV that stays in the dima of the banner -->
    <center>
      <h1>SOLUÇÃO COMPLETA EM ARQUITETURA</h1>
    </center>
    <div id="botao">
      <center><a class="link" href="contato.html">FAÇA UM ORÇAMENTO</a></center>
    </div>
  </div>
  <!-- END DIV TEXTOMIDDLE -->
</div>
<!-- END DIV BGMAIN-->

Answer 1

尝试将此添加到您的css：

@media screen and (min-width: 300px) {
#bgmain {width:1080px;}
}

@media screen and (min-width: 519px) {
#bgmain {width:100%;}
}