@media only screen and (min-width: 601px) and (max-width: 1090px) { 

#left-article {
    float: none;
    width: 96%;
    margin: 0px auto;
    padding: 0;
    position: relative;
}
#last-article {
    margin-bottom: 25px;
}
#osn-text {
    position: relative;
    background: #fff;
    margin-right: 0;
    bottom: 0;
    padding: 13px 13px 13px 15px;
    border: 1px solid #c9c9c9;
}
.left-art-item {
    width: 33%;
    float: left;
}
.right-art-item {
    float: right;
    width: 64%;
}
#right-article {
    float: left;
    width: 96%;
    margin-top: 30px;
}
#last-test .last-test-left {
    display: none;
}
#last-test .last-test-right {
    float: none;
    width: 100%;
}
#calc-samogon {
    margin: 16px 0px;
    padding: 20px;
    border: 1px solid #c3c3c3;
    text-align: left;
    background-repeat: no-repeat;
    display: block;
    font-family: 'Open Sans';
    font-weight: 600;
    font-size: 17px;
    color: #0c0c0c;
    line-height: 30px;
    height: unset;
    padding-right: 0;
    background-image: none;
    text-decoration: none;
    background-position: right bottom;
    padding-top: 15px;
}
}

@media only screen and (min-width: 900px) and (max-width: 1090px) { 


}

@media only screen and (min-width: 601px) and (max-width: 750px) {
 
} 

@media only screen and (min-width: 601px) and (max-width: 900px) {


}
@media screen and (max-width: 600px){

}