.list_div{
    max-width: 50%;
    margin: auto;
}
.list li{
    line-height: 2rem;
}
.list_div a:hover{
    text-decoration: none;
}
.login_button {
    display: block;
    width: 10vw;
    text-decoration: none;
    border-radius: 25px;
    outline: none;
    padding: 10px;
    text-align: center;
    background-color: skyblue;
    border: #1a84c2;
    font-size: 1.2rem;
    color: white;
    margin: auto;
}
.login_button:hover{
    background-color: #1a84c2;
    cursor: pointer;
}

@media screen and (max-width: 900px) {
    .list_div{
        max-width: 80%;
    }
    .login_button{
        width: 40vw;
        margin-bottom: 2rem;
    }
}