html{
    font-family: sans-serif;
    font-weight: 100;
    line-height: 1.3rem;
    letter-spacing:0.25rem;
    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: 2rem;
}
form{
    width: 20rem;
    background-color: black;
    height: 20rem;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 0 3rem gray;
    flex-shrink: 0;
    padding: 2.5rem;
}
input.in{
    width: 16rem;
    height: 3rem;
    border-radius: 3rem;
    font-size: 2rem;
    text-align: center;
    color: #333;
    border: none;
    background-color: #eee;
    letter-spacing: 0.1rem;
    font-weight: 100;
    box-shadow: 0 0 0.5rem gray inset;
    transition: 0.5s;
}
input.in:hover{
    box-shadow: 0 0 1rem #555 inset;
}
input::placeholder{
    color: #e5e5e5;
}
#user_name{
    margin-bottom: -1rem;
}
.server_info{
    color: #999;
    margin-bottom: -0.5rem;
    letter-spacing: 0.2rem;
    text-align: center;
    line-height: 3rem;
}
.title{
    letter-spacing: normal;
    margin-bottom: -1.5rem;
}
#submit{
    height: 4rem;
    width: 4rem;
    /*margin: 3rem 0 4rem 0;*/
    padding: 0;
    margin-bottom: -1rem;
    border-radius: 4rem;
    font-size: 0.9rem;
    font-weight: 400;
    background-color: white;
    border: none;
    box-shadow: 0 0 1rem white;
    flex-shrink: 0;
    transition: 0.5s;
}
#submit:hover{
    cursor: pointer;
    box-shadow: 0 0 3rem white;
}
#bottom{
    width: 4rem;
    height: 4rem;
    background-color: black;
    border-radius: 50%;
    margin: 3rem;
    display: flex;
    letter-spacing: normal;
    align-items: center;
    justify-content: center;
    color: #bbb;
    font-size: 0.7rem;
    box-shadow: 0 0 3rem gray;
    flex-shrink: 0;
}
a{
    color: white;
    padding: 0.4em 1em;
    border-radius: 2em;
    border: dashed 1px gray;
    transition: 0.5s;
    text-decoration: none;
}
a:hover{
    background-color: white;
    color: black;
    font-weight: 700;
}
a:active{
    background-color: white;
    color: black;
    font-weight: 700;
}