.section1{
  background-image: url(../img/head_bac.jpg);
  background-size: cover;
  position: relative;
}
/*.section1 .content{
  width:100%;
  height:100%;
  box-sizing: border-box;
  color:white;
  line-height:30px;
  text-align: justify;
  padding:0 10px;
  position: absolute;
  background-color: rgba(0, 0, 0, 0.35);
  border-radius:2px;
}
.first-p-name{
  margin-top: 5%;
  margin-left: 17%;
}
.statement{
  margin-top: 20%;
  margin-left: 50%;
  position:relative;
  visibility:hidden;
  top:-100px;}
*/
body{
  padding: 0;
  margin: 0;
  font-family: 微软雅黑;
  font-weight: bold;
  font-size: 22px;
  background-image: url(../img/head_bac.jpg);
  background-position: center center;
    background-repeat: no-repeat;
    background-size:cover;
    -moz-background-size:cover;
    -webkit-background-size:cover;
}
.container{
  width: 90%;
}
.task{
  opacity: 0.65;
  -moz-opacity: 0.65;
  filter:alpha(opacity=65);
  margin: 150px auto;
  padding: 100px auto;
}
.task button{
  width: 160px;
  height: 50px;
  margin-left: 26px;
  margin-top: 10px;
  text-align: center;
  background-color: transparent;
  color: #000;
  font-weight: bold;
  font-size: 22px;
  border: 4px solid #000;
  border-radius: 65px;
  -webkit-transition:all 0.3s linear;
}
.task button:hover{
  background-color: #fff;
  color: #0CC ;
  border: 2px solid #0CC;
  -webkit-transition:all 0.2s linear;
}
.task button a{
  text-decoration: none;
  color: #000;
}
.task button a:hover{
  color: #0CC;
}