.admin{
    display: flex;
    justify-content: space-between;
    color:black;
    width: 100%;
    height: 100%;
    background-color: blueviolet;
    min-width: 750px;
    box-sizing: border-box;
}

.admin .leftnav{
    background-color:green;
    max-width: 250px;
    flex-grow:1;
}
.admin .rightcontent{
    flex-grow:2;
    margin-left: 5px;
}

.admin .leftnav .el-card{
    width: 100%;
    border-radius: 0px;
}
.admin .rightcontent .el-card{
    width: 100%;
    border-radius: 0px;
}