html {
    height: 100%;
}

body {
    background: linear-gradient(to right, #141e30, #243b55);
    color: white;
    font-family: Arial, Helvetica, sans-serif;
}

#output {
    font-size: 13px;
}

span {
    color: red;
    white-space: nowrap;
    font-size: 13px;
}

.wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, .5);
    border-radius: 10px;
    padding: 30px;
    box-shadow: rgb(38, 57, 77) 0px 20px 30px -10px;
}

input {
    border: none;
    border-bottom: 1px solid #fff;
    outline: none;
    background: transparent;
    color: white;
}

select {
    outline: none;
}

button {
    color: white;
    padding: 10px;
    border: 1px solid white;
    background: none;
    cursor: pointer;
}