* {
    margin: 0;
    padding: 0;
    border: 0;
}
.icon-love {
    width: 400px;
}
html, body {
    width: 100%;
    height: 100%;
}

body {
    /*background-color: skyblue;*/
    overflow: hidden;   /*隐藏超出的部分*/
}

.container {
    width: 100%;
    height: 100%;
    position: relative;
}

/*---------------------- body_left -------------------------*/
.body_left {
    width: 300px;
    height: 300px;
    left: 0;
    bottom: 110px;
    position: absolute;
    z-index: 98;

}

/*---------------------- body_left -------------------------*/

/*---------------------- body_center -------------------------*/
.container .love {
    width: 520px; /* 13 * 40 */
    height: 440px; /* 11 * 40 */
    left: 50%;
    top: 50%;
    position: absolute;
    margin: -260px 0 0 -220px;
    /*background-color: gray;*/
}

.love .block {
    right: 0;
    position: absolute;
    visibility: hidden; /*未开始升空动画前隐藏*/
    background-color: yellow;
}

.love .block div {
    width: 40px;
    height: 40px;
    position: absolute;
    background: url("./heart.png") no-repeat;
    background-size: contain;
    /*background-color: #c40908;*/
    /*border: 1px solid silver;*/
    box-sizing: border-box;
}



/*---------------------- footer -------------------------*/

/*：此代码只作为演示用,不是源代码。源码地址唯一出处: http://www.bootstrapmb.com/item/5850(这个说明仅在演示里会看到,下载的源码里没有)*/