html {
    width: 100%;
    height: 100%;
}

body {
    background-color: white;
    line-height: 1.4em;
    width: 730px;
    height: calc(100% - .5em);
    margin: 0px auto;
}

iframe {
    width: calc(100% - .25em);
    height: calc(100% - .25em);
    border: 0;
}

table {
    border-collapse: collapse;
    margin: 1em 0;
}

td {
    border: 1px solid;
    padding: .25em;
}

td>:first-child {
    margin-top: 0;
}

td>:last-child {
    margin-bottom: 0;
}

h1 {
    margin: 0 auto;
    padding: .5em 0;
    background-color: pink;
    font-size: 2em;
    line-height: 1em;
    text-align: center;
    width: 100%;
}

.container_top {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.container_top>.content {
    flex-grow: 1;
}

.container_left {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: row;
}

.container_left>.content {
    flex-grow: 1;
}