style.css

@import url('https://fonts.googleapis.com/css2?family=Work+Sans&display=swap');

body {
    /* background: linear-gradient(to bottom, darkblue, darkslateblue); */
    background: darkslateblue;
    font-family: 'Work Sans', sans-serif;
}

.panel {
    width: 40%;
    /* height: 30%; */
    position: absolute;
    left: 30%;
    top: 20%;

    background: antiquewhite;
    padding: 0px 20px 0px 20px;
    border-radius: 10px;
}

.input {
    font-size: 20px;
}

input {
    height: 25px;
    width: 150px;
    font-size: 20px;
    position: relative;
    top: 2px;
}

.input button {
    background: orangered;
    text-align: center;
    font-size: 17px;
    color: white;
    font-weight: bold;
    height: 30px;
    width: 100px;
    border-radius: 5px;
    background-position: center;
    background-repeat: no-repeat;
    background-size: 15px 15px;
}

#options {
    width: 100%;
    text-align: center;
}

#options button {
    background: rgb(16, 21, 31);
    font-size: 17px;
    color: white;
    font-weight: bold;
    height: 30px;
    border-radius: 5px;
}