body, html {
    margin: 0;
    padding: 0;
    height: 100%;
}

header {
    height: 32px;
    background-color: #333;
    padding: 8px;
    display: flex;
    align-items: center;
}

input[type="text"] {
    width: 300px;
    padding: 6px;
    margin-right: 10px;
}

button {
	margin-left: 6px;
    padding: 6px 10px;
    background-color: #4CAF50;
    border: none;
    color: white;
    cursor: pointer;
}

main {
    height: 648px;
}

iframe {
    width: 100%;
    height: 648px;
    border: none;
}

        main::-webkit-scrollbar {
            width: 5px;
        }

        main::-webkit-scrollbar-thumb {
            background-color: #000;
        }

        main::-webkit-scrollbar-track {
            background-color: #fff;
        }