.box-main {
    text-align: center;
    text-transform: uppercase;
}

.box-action {
}

    .box-action .btn {
        font-weight: 600;
        padding: 100px 200px;
        font-size: 100px;
    }

.title {
    text-transform: uppercase;
    color: red;
    font-weight: 600;
    font-size: 45px;
    margin: 10px;
}

.logo {
    width: 56px;
    margin-right: 20px;
    margin-top: -10px;
}

.lb-sub {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: blue
}

.btn-service {
    width: 100%;
    margin-bottom: 10px;
    text-transform:uppercase
}

.stt {
    font-size: 100px;
    text-align: center;
    line-height: 100px
}

.text-red {
    color: red
}

.text-blue {
    color: blue
}

.text-bold {
    font-weight: 600
}

.kq-item {
    border: 3px solid #ccc;
    padding: 10px 20px;
    border-radius: 7px;
    margin-bottom:10px
}

/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {
    .title {
        font-size: 29px
    }

    .logo {
        width: 40px;
        margin-right: 5px
    }

    .lb-sub{ 
        font-size:18px ;
        line-height:18px;
        margin-bottom:10px
    }
}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {
    .head-box-sub-title {
        color: red;
    }
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {
}

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
}

/* Extra large devices (large laptops and desktops, 1200px and up) */
@media only screen and (min-width: 1200px) {
}