.signup{
    margin: auto;
    max-width: 50vw;
}
.signup ul{
    margin: 1em 0 0 1.5em;
}
.signup_button {
    display: block;
    width: 10em;
    height: 2em;
    text-decoration: none;
    border-radius: 25px;
    outline: none;
    padding: 10px;
    text-align: center;
    background-color: skyblue;
    border: #1a84c2;
    font-size: 1.2rem;
    color: #fff;
    margin: 1rem 0;

}
.signup_button:hover{
    background-color: #1a84c2;
    cursor: pointer;
}

@media screen and (max-width: 900px) {
    .signup{
        margin: auto;
        max-width: 70vw;
    }
}