.main-content{
    display: block;
}

.costs{
    list-style-type: none;
}

.costs li{
    font-size: 14px;
    margin-left: 17px;
}

.costs span:before{
    content: '-';
    margin-left: -0.5em;
    margin-right: 0.25em;
}

.costs span{
    display: block;
}

@media (min-width: 800px){
    .costs li{
        font-size: 16px;
    }
}

@media (min-width: 1440px){
    .costs li{
        font-size: 18px;
    }
}

@media (min-width: 1600px){
    .costs li{
        font-size: 20px;
    }
}