style.css

@charset "UTF-8";

* {
    padding: 0;
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
}

header {
    background: linear-gradient(to right, #346f97, #9ac6e2);
    padding: 20px;
    text-align: center;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 50px;
    padding-top: 50px;
    background-color: white;
}

input {
    width: 40%;
    padding: 10px;
    font-size: large;
    border: none;
    outline: none;
    background-color: #ebebeb;
    border-radius: 5px;
}

button {
    font-size: medium;
    color: white;
    background-color: #5485a7;
    padding: 15px;
    border-radius: 10px;
    border: none;
    transition: 0.125s;
}

button:hover {
    background-color: #3f6681;    
}

button:active {
    background-color: #598fb6;    
}

div {
    background-color: #cfcfcf;
    border-radius: 10px;
    width: 50vw;
    height: 40vh;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}