.caseBackground {
	width: 100%;
	height: 380px;
	background: url(../images/caseListBG.png);
	background-size: 110% 110%;
	animation:myfirst 15s;
	-moz-animation:myfirst 15s; /* Firefox */
	-webkit-animation:myfirst 15s; /* Safari and Chrome */
	-o-animation:myfirst 15s; /* Opera */
	animation-fill-mode: forwards;
}

@keyframes myfirst
{
from {background-size: 110% 110%;}
to {background-size: 100% 100%;}
}

@-moz-keyframes myfirst /* Firefox */
{
from {background-size: 110% 110%;}
to {background-size: 100% 100%;}
}

@-webkit-keyframes myfirst /* Safari and Chrome */
{
from {background-size: 110% 110%;}
to {background-size: 100% 100%;}
}

@-o-keyframes myfirst /* Opera */
{
from {background-size: 110% 110%;}
to {background-size: 100% 100%;}
}

.brandContainer {
	width: 1200px;
	position: absolute;
	left:50%;
	-webkit-transform: translateX(-50%);
	transform: translateX(-50%);
	padding-bottom: 90px;
}

.brandSelectContainer {
	width: 100%;
	box-sizing: border-box;
	display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 50px;
}

.brandSelectChild {
	width: 200px;
	height: 50px;
	line-height: 50px;
    background: #3e3e3e;
    color: #fff;
    font-size: 18px;
    margin: 0 10px;
    text-align: center;
}

.brandSelectChild:hover {
    cursor: pointer;
}

.brandSelectActived {
    width: 200px;
	height: 50px;
	line-height: 50px;
    font-size: 18px;
    margin: 0 10px;
    text-align: center;
    background: #fdd947;
    color: #3e3e3e;
    font-weight: 700;
}

.brandContentContainer {
    box-sizing: border-box;
    width: 100%;
    padding: 20px;
}

.brandContent {
    width: 100%;
    font-size: 16px;
    color: #fff;
    line-height: 30px;
    margin-top: 30px;
}

.brandContent img {
    width: 100%;
    height: auto;
    margin-top: 20px;
}

.videoContainer {
    margin-top: 20px;
    width: 1160px;
    height: 640px;
}