* { 
    box-sizing: border-box;
    font-family: 'Open Sans', sans-serif;
}
div {border: 0px red solid;
   
}

.col-1 { width: calc(100% / 12);}
.col-3 { width: calc(100% / 4);}
.col-4 { width: calc(100% / 3);}
.col-5 { width: calc(100% / 12 * 5);}
.col-6 { width: calc(100% / 2);}
.col-12 { width: 100% ;}

.bold {font-weight: 900; margin: 10px 0px}
.ligth {font-weight: 300; margin: 10px 0px;}
.section-content {
    width: 1140px; 
    margin: 0 auto;

    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
}

.flex {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    padding-bottom: 80px;
}
.section-programmist {
            background-image: url('https://wallpapers.com/images/hd/the-hogwarts-great-hall-1920-x-1080-wallpaper-yc7v2koax2xcizta.jpg');
            background-size: cover;
            padding: 50px 0;
            color: white;
        }
 body {
            font-family: 'Open Sans', sans-serif;
            background-color: #f0f0f0;
            margin: 0;
            padding: 0;
            color: #333;
        }

       

        .section-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }

        .col-1, .col-2, .col-3, .col-4, .col-6, .col-12 {
            margin: 10px;
        }

        .logo {
            width: 150px;
        }

        .col-2.bold {
            font-size: 24px;
            font-weight: bold;
        }

        .col-3.ligth, .col-2.ligth {
            font-size: 19px;
        }

        .box {
            background-color: rgba(0, 0, 0, 0.5);
            padding: 20px;
            border-radius: 10px;
            font-size: 18px;
        }

        .social a {
            color: white;
            margin: 0 10px;
            text-decoration: none;
            font-size: 20px;
        }

        .section-work {
            background-color: #ffffff;
            padding: 50px 0;
        }

        .section-work h2 {
            text-align: center;
            font-size: 28px;
            margin-bottom: 40px;
        }

        .col-3 {
            text-align: center;
        }

        .col-3 img {
            max-width: 100px;
            margin-bottom: 10px;
        }

        .flex {
            display: flex;
            justify-content: space-between;
        }

        .col-12 {
            text-align: center;
            font-size: 20px;
        }

        input[type="text"] {
            padding: 10px;
            width: 80%;
            margin-top: 10px;
        }

        input[type="submit"] {
            padding: 10px 20px;
	    width: 80%;
            font-size: 18px;
            background-color: #d9b255;
            border: none;
            color: white;
            cursor: pointer;
        }

        input[type="submit"]:hover {
            background-color: #45a049;
        }

        /* Карусель */
        .owl-carousel .item {
            text-align: center;
            padding: 20px;
            background-color: #d9b459;
            border-radius: 10px;
        }

        .owl-carousel .item img {
            max-width: 200px;
            border-radius: 50%;
            margin-bottom: 10px;
        }

        .carousel-title {
            font-size: 18px;
            font-weight: bold;
        }
.section-programmist ul {
    list-style: none;
    font-weight: 700;
}
.section-programmist ul li {
    background: url(https://upload.wikimedia.org/wikipedia/commons/0/09/Harry_Potter_Lightning.svg);
    background-repeat: no-repeat;
    background-size: 20px;
    padding-left: 30px;
    line-height: 30px;
background-position-y: center; 
}
.section-programmist .logo {width: 210%; margin: 10px 0px}
.section-work {
    background: url(https://i.pinimg.com/originals/66/91/36/669136b812686964370823fe0ec57366.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top center; 
    text-align: center;
}
@media only screen and (max-width: 960px)
{
    div { border: 0px red solid;}
    .section-content {width: 100%;}
    .col-3 {width: 33%}
    .null { display: none; }
    .social {
        width: 100%;
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
    }
     .social div {
        width: 25%;
        padding: 20px;
        text-align: center;
        font-size: 30px;
    }
    .col-6 {
        width: 100%;
    }
    .col-2    {
    width: calc(100% / 5);
}
}

@media only screen and (max-width: 768px)
{ 
    .col-1  {width: 30%; padding: 10px 35px}
    .col-2.bold {width: 70%; font-size: 30px;}
    .col-3.ligth {width: 50%; text-align: center}
    .col-2.ligth {width: 50%; text-align: center}
    
     .social {
        width: 100%;
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
    }
     .social div {
        width: 25%;
        padding: 20px;
        text-align: center;
        font-size: 30px;
    }
    .col-3 {width: 50%}
}
@media only screen and (max-width: 480px)
{ 
    .col-1  {width: 20%; }
    .col-2.bold {width: 80%; font-size: 30px;}
    .col-3.ligth {width: 100%; text-align: center}
    .col-2.ligth {width: 100%; text-align: center}
    
     .social {
        width: 100%;
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
    }
     .social div {
        width: 100%;
        padding: 20px;
        text-align: center;
        font-size: 30px;
    }
    .col-3 {width: 100%} 
}