.main-ctr .el-collapse-item__wrap{padding:0 16px}.main-ctr .el-collapse-item__header{background-color:#f5f7fa;padding:0 0 0 16px}.bg-gradient-pattern{background-attachment:fixed;background-color:#fff;background-image:radial-gradient(circle at 20% 50%,rgba(59,130,246,.1) 0,transparent 50%),radial-gradient(circle at 80% 10%,rgba(22,163,160,.1) 0,transparent 30%),radial-gradient(circle at 90% 15%,rgba(34,197,94,.1) 0,transparent 35%),radial-gradient(circle at 60% 40%,rgba(22,163,160,.1) 0,transparent 40%),radial-gradient(circle at -10% 85%,rgba(124,58,237,.1) 0,transparent 35%),radial-gradient(circle at -25% 60%,rgba(167,93,208,.1) 0,transparent 40%),radial-gradient(circle at 90% 60%,rgba(99,102,241,.1) 0,transparent 40%);background-repeat:no-repeat;background-size:200% 300%;position:relative}