.belt{
    padding: 1% 20%;
    margin: 2% 0;
    background-color: rgba(76,79,81,0.7);
    width: 100%;
    text-justify: inter-word;
}
.thumbnail{
    min-height: 300px;
}
.glyphicon{
    font-size: 60px;
}
.main{
    background-image: url("back2.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    /*text-align: justify;*/
    text-justify: inter-word;
}
@media only screen and (max-width: 1000px) {
    .belth {
        visibility: hidden;
    }
    .belt{
        text-align: center;
    }
    .thumbnail{
        min-height: 200px;
    }

}