.flex{display: -webkit-flex;   display: flex;}
.app-download{ display: none;}

header{ width: 100%; height: 360px; background: url(banner.png) no-repeat top center;}
.header{ width: 1000px; height: 100%; margin: 0 auto; justify-content: center; align-items: center; font-size: 40px; font-weight: bold;}
.header div{ margin-right: 20px;}
.header_1 img{ max-width: 100px;}

.main{ width: 1000px; margin: 20px auto;}
.item{ width: 50%; margin: 20px auto; border-radius: 10px; border:1px solid #4285ec; /*border-image: -webkit-linear-gradient( #4285ec, #0cb9fb) 30 30;border-image: -moz-linear-gradient( #4285ec, #0cb9fb) 30 30;border-image: linear-gradient( #4285ec, #0cb9fb) 30 30;*/ overflow: hidden;}
.item_input{ height: 48px;}
.item_input input{ width: 96%; padding: 0 2%; line-height: 48px; font-size: 14px;}
.item_textarea{ height: 200px; line-height: 24px; border-radius: 10px;}
.item_textarea textarea{ width: 96%; height: 96%; padding:2%; font-size: 14px;}
#submit{ display: block; margin: 0 auto; cursor: pointer;}