h2,
span {
    color: white;
    letter-spacing: 1px;
}

h2 {
    font-weight: bold;
    margin-bottom: 10px;
}

span {
    font-size: 20px;
    margin-top: 10px;
}

.input-group-text {
    margin: 0;
    font-size: 20px;
}

* {
    box-sizing: border-box;
}