html { 
    background: rgb(247, 241, 115) no-repeat center center fixed; 
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
  }

.img{
   height: 100px;
   width: 100%;
   background-size: cover;
   background-position: center;
   font-family: sans-serif;
}
.loginbox{
    width: 320px;
    height: 420px;
    background: #000;
    color: #fff;
    top: 10%;
    left: 50%;
    bottom: 100%;
    position: absolute;
    transform: translate(-50%, 50%);
    box-sizing: border-box;
    align-items: center;
    padding: 70px 30px;
    font-family: sans-serif;
    font-size: 15px;
}
.avatar{
    width: 100px;
    height: 100px;
    border-radius: 50%;
    position: absolute;
    top: -50px;
    left: calc(50% - 50px);

}
h1{
    margin: 0;
    padding: 0 0 20px;
    text-align: center;
    font-size: 22px;

}
.loginbox p{
    margin: 0;
    padding: 0;
    font-weight: bold;
}
.loginbox input{
    width: 100%;
    margin-bottom: 20px;
}
.loginbox input[type="text"], input[type="password"]{
    border: none;
    border-bottom: 1px solid #fff;
    background: transparent;
    outline: none;
    height: 40px;
    color: #fff;
    font-size: 16px;
}
.loginbox input[type="submit"]{
    border: none;
    outline: none;
    height: 40px;
    background: #fb2525;
    color: #fff;
    font-size: 18px;
    border-radius: 20px;
}
.loginbox input[type="submit"]:hover{
    cursor: pointer;
    background: #ffc10700;
    color: #000;
}
.loginbox a{
    text-decoration: none;
    font-size: 12px;
    line-height: 20px;
    color: darkgrey;
}
.loginbox a:hover{
    cursor: pointer;
    background: #ffc10700;
    color: #000;
}