d14.css

body{
    background-image: url('110.jpg');
    background-size: cover;
    background-repeat: no-repeat;
}
input{
    position: absolute;
    top:50%;
    left:50%;
    width:200px;
    height:60px;
    transform: translate(-50%,-50%);
    border-radius: 50px;
    outline: none;
    background: transparent;
    border:2px solid #fff;
    color: #fff;
    font-family:'Times New Roman', Times, serif;
    font-size:20px;
}
ul {
    list-style: none;
    margin:0;
    padding:0;
    
}
ul li a{
    display: block;
    width:100px;
    float: left;
    background:rgba(0, 0, 0, 0.3);
    height:30px;
    color:#fff;
    margin: 5px;
    padding-top:15px;
    text-align: center;
    text-decoration: none;
    border-radius:20px;

}
a:hover{
    border:1px solid #fff;
}
input:hover{
    background-color:#fff;
    color:#000;
    transition: 0.5s;
}
.list{
    position: absolute;
    top:20%;
    left:52%;
    transform: translate(-50%,-50%);
    width:400px;
    height: 50px;

}