body{
    font-family: arial,sans-serif;
}
li{
    display:inline-block;
    list-style-type: none;
    padding-right:10px;
}
a{
    color:#555;
    text-decoration: none;
}
a:hover{
    text-decoration: underline;
}
a:hover,#ga:hover{
    opacity:.7;
}
button{
    color:#5f6368;
    font-size: 14px;
    background-color: #eee;
    font-family: inherit;
    padding: 1%;
    border: none;
    margin: 11px 4px;
    padding: 0 16px;
    height: 36px;
    min-width: 54px;
}
button:hover, button:focus{
    outline: 1px solid #aaa;
}
#search{
    border-radius: 25px;
    padding: 10px;
    width: 50%;
    border: 1px solid #ddd;
    margin-top:10px;
    margin-bottom:10px;
}
#search:focus{
    outline: none;
    border-color:none;
}
#you{
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: #eee;
    border-radius: 50%;
}
footer{
    position: absolute;
    background-color: #ddd;
    right: 0;
    left: 0;
    bottom: 0;
}
.center{
    display: block;
    margin:auto;
}
.flexbox{
    display: flex;
    justify-content: center;
    width: 500px;
    height: 40px;
    margin: auto;
}
main{
    margin-top:140px;
}
#nav-footer > ul > li:nth-child(5) {
    margin-left: 600px;
}
header{
position: absolute;
    top: 0;
    right: 0;
}