html{
    font-family: sans-serif;
    font-weight: 100;
    line-height: 1.3rem;
    letter-spacing:0.1rem;
    text-align: center;
    color:#777;
    height: 100%;
}
body{
    margin: 0 auto;
    padding: 0;
    max-width: 640px;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}
img{
    width: 8rem;
    margin: 1rem;
}
form{
    width: 18rem;
    height: 16rem;
    box-shadow: 0 0 3rem gray;
    padding: 2rem 1rem 2rem 1rem;
}
input.in{
    width: 12rem;
    height: 2.2rem;
    font-size: 1.2rem;
    text-align: center;
    color: #333;
    border: none;
    letter-spacing: 0.1rem;
    box-shadow: 0 0 0.5rem gray inset;
    margin: 0;
}
#user_name{
    margin: 0;
}
.server_info{
    letter-spacing: 0.1rem;
    line-height: 3em;
}
.title{
    margin: 0;
    font-size: 0.8rem;
    flex-grow: 0.5;
    display: flex;
    align-items: flex-end;
}
#submit{
    margin: 1rem 0 0 0;
    height: 3.5rem;
    width: 3.5rem;
    padding: 1.25rem 0;
    border-radius: 4rem;
    font-size: 1rem;
    font-weight: 400;
    background-color: white;
    border: none;
    font-size: 0.8rem;
    text-align: center;
    -webkit-appearance: none; 
}
#bottom{
    width: 4rem;
    height: 4rem;
    background-color: black;
    border-radius: 50%;
    margin: 2rem;
    display: flex;
    letter-spacing: normal;
    align-items: center;
    justify-content: center;
    color: #bbb;
    font-size: 0.8rem;
    box-shadow: 0 0 3rem gray;
}
a{
    color: white;
}