.btn-h {
    cursor: pointer;
    transition: all 0.2s ease;
    filter: drop-shadow(0px 0px 0vh transparent);
    }
    .btn-h:hover {
    transition: all 0.2s ease;
    filter: drop-shadow(0px 0px 0.6vh #ffc100);
    }
    .el-highlighting {
    cursor: help;
    transition: all 0.2s ease;
    filter: brightness(1);
    }
    .el-highlighting:hover {
    transition: all 0.2s ease;
    filter: brightness(1.25);
    }
    .btn-b {
    cursor: pointer;
    transition: all 0.2s ease;
    filter: drop-shadow(0px 0px 0vh transparent);
    }
    .btn-b:hover {
    transition: all 0.2s ease;
    filter: drop-shadow(0px 0px 0.3vh #ffffff);
    }
    .el-h {
    transition: all 0.2s ease;
    filter: brightness(1);
    }
    .el-h:hover {
    transition: all 0.2s ease;
    filter: brightness(2);
    }