CSS3 过渡特性创建信封效果的联系表单

最近给大家分享 CSS3 效果比较多，都是充分运用了 CSS3 来实现的。通过 CSS3 的新特性，我们创作出好的交互和效果的可能性大大增加。这篇文章中，我想与大家分享使用 CSS3 过渡特性实现的信封效果的联系表单。

　　最近给大家分享 CSS3 效果比较多，都是充分运用了 CSS3 来实现的。通过 ​​CSS3​​ 的新特性，我们创作出好的交互和效果的可能性大大增加。这篇文章中，我想与大家分享使用 ​​CSS3​​ 过渡特性实现的信封效果的联系表单。

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CSS3 代码：

#form_wrap { overflow:hidden; height:446px; position:relative; top:0px;
    -webkit-transition: all 1s ease-in-out .3s;
    -moz-transition: all 1s ease-in-out .3s;
    -o-transition: all 1s ease-in-out .3s;
    transition: all 1s ease-in-out .3s;}

  #form_wrap:before {content:"";
    position:absolute;
    bottom:128px;left:0px;
    background:url('images/before.png');
    width:530px;height: 316px;}

  #form_wrap:after {content:"";position:absolute;
    bottom:0px;left:0;
    background:url('images/after.png');
    width:530px;height: 260px; }

  #form_wrap.hide:after, #form_wrap.hide:before {display:none; }
  #form_wrap:hover {height:776px;top:-200px;}


  form {background:#f7f2ec url('images/letter_bg.png'); 
    position:relative;top:200px;overflow:hidden;
    height:200px;width:400px;margin:0px auto;padding:20px; 
    border: 1px solid #fff;
    border-radius: 3px; 
    -moz-border-radius: 3px; -webkit-border-radius: 3px;
    box-shadow: 0px 0px 3px #9d9d9d, inset 0px 0px 27px #fff;
    -moz-box-shadow: 0px 0px 3px #9d9d9d, inset 0px 0px 14px #fff;
    -webkit-box-shadow: 0px 0px 3px #9d9d9d, inset 0px 0px 27px #fff;
    -webkit-transition: all 1s ease-in-out .3s;
    -moz-transition: all 1s ease-in-out .3s;
    -o-transition: all 1s ease-in-out .3s;
    transition: all 1s ease-in-out .3s;}


    #form_wrap:hover form {height:530px;}

    label {
      margin: 11px 20px 0 0; 
      font-size: 16px; color: #b3aba1;
      text-transform: uppercase; 
      text-shadow: 0px 1px 0px #fff;
    }

    input[type=text], textarea {
      font: 14px normal normal uppercase helvetica, arial, serif;
      color: #7c7873;background:none;
      width: 380px; height: 36px; padding: 0px 10px; margin: 0 0 10px 0;
      border:1px solid #f8f5f1;
      -moz-border-radius: 5px; -webkit-border-radius: 5px; border-radius: 5px;
      -moz-box-shadow: inset 0px 0px 1px #726959;
      -webkit-box-shadow:  inset 0px 0px 1px #b3a895; 
      box-shadow:  inset 0px 0px 1px #b3a895;
    } 

    textarea { height: 80px; padding-top:14px;}

    textarea:focus, input[type=text]:focus {background:rgba(255,255,255,.35);}

    #form_wrap input[type=submit] {
      position:relative;font-family: 'YanoneKaffeesatzRegular'; 
      font-size:24px; color: #7c7873;text-shadow:0 1px 0 #fff;
      width:100%; text-align:center;opacity:0;
      background:none;
      cursor: pointer;
      -moz-border-radius: 3px; -webkit-border-radius: 3px; border-radius: 3px; 
      -webkit-transition: opacity .6s ease-in-out 0s;
      -moz-transition: opacity .6s ease-in-out 0s;
      -o-transition: opacity .6s ease-in-out 0s;
      transition: opacity .6s ease-in-out 0s;
    }

    #form_wrap:hover input[type=submit] {z-index:1;opacity:1;
      -webkit-transition: opacity .5s ease-in-out 1.3s;
      -moz-transition: opacity .5s ease-in-out 1.3s;
      -o-transition: opacity .5s ease-in-out 1.3s;
      transition: opacity .5s ease-in-out 1.3s;}

      #form_wrap:hover input:hover[type=submit] {color:#435c70;}