timeconvert/src/App.css

.App {
    padding: 1rem;
}

.App * {
    text-align: center;
}

h1 {
    font-size: 36px;
    font-weight: 300;
    color: #0c0c0d;
    margin-top: 0;
}

.browser-style button.browser-style {
    border-radius: 2px;
    min-height: 32px;
    height: auto;
    padding: 8px;
    font-size: 13px;
    min-width: 132px;
}

input[type="text"] + input[type="text"] {
    margin-left: 0.5rem;
}