body {
    font-size: 1.2rem;
    background-color: beige;
}

.header {
    text-align: center;
    grid-area: header;
    border: 1px solid black;
    padding: 1rem;
    background-color: antiquewhite;
    background-image: url(images/back.jpg);
    background-repeat: no-repeat;
    background-position: center;
}

.content {
    grid-area: content1;
    border: 1px solid black;
    padding: 1rem;
    background-color: antiquewhite;
    line-height: 1.5rem;
}

.footer {
    grid-area: footer;
    border: 1px solid black;
    padding: 1rem;
    text-align: right;
    background-color: antiquewhite;
    background-image: url(images/back.jpg);
    background-repeat: no-repeat;
    background-position: bottom center;
}

.container {
    display: grid;
    /*justify-items: center;*/
    /*align-items: center; */
    grid-template-columns: minmax(0vw, 3vw) minmax(300px, 94vw) minmax(0vw, 3vw);
    grid-template-rows: auto-fit repeat(auto-fit, minmax(200px, 1fr)) auto-fit;
    grid-template-areas: ". header ." ". content1 ." ". footer .";
    row-gap: 10px;
}

.footer img {
    width: 300px;
    height: 100px;
}

@media only screen and (max-width: 768px) {
    .header #mainImage {
        width: 300px;
        height: 100px;
    }
}

@media only screen and (min-width: 769px) {
    .header #mainImage {
        width: 550px;
        height: 150px;
    }
}

.container .header #mm a img:hover {
    transform: scale(1.2);
    transition: 0.3s;
}

.container .footer a img:hover {
    transform: scale(1.1);
    transition: 0.6s;
}

.line {
    width: 150px;
    height: 50px;
    vertical-align: middle;
}

.apple {
    width: 1.5rem;
    height: 1.5rem;
}

.acn {
    text-align: center;
    padding: 1rem;
    background-color: rgb(255, 251, 235);
    font-weight: bold;
    margin-bottom: 1.5rem;
}

.acn .text1 {
    text-align: left;
}

.acn .text1 .text2 {
    text-align: right;
}

.explain {
    background-color: rgb(247, 250, 238);
    padding: 1rem;
}

.clearcont {
    margin: 0;
    padding: 0;
}

.ifloat {
    float: left;
}

.clearfloat {
    clear: both;
}

.jizouImage {

    width: 170px;
    height: 300px;

}