.course__list {
    width: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

.course__list .panel__item {
    width: 230px;
}

@media only screen and (max-width:767px){
    .course__list .panel__item {
        width: 48.51%;
        border: none;
    }
}