.main-content {
    padding-top: 5em;
}

#register_button {
  background-color: #1F8D9B;
  font-size: 1.3em;
  color: #FFF;
  padding: 1em;
  display: inline-block;
  border-radius: 4px;
}

#advantages_wrapper {
    padding-top: 3em;
    display: flex;
    justify-content: space-between;
}

#advantages_wrapper div {
    width: 26%;
    padding: 2em;
    border-radius: 4px;
    box-shadow: 0 0 15px #DDD;
    text-align: justify;
}

@media (max-width: 800px) {
    .main-content {
        padding: 3em 1em 1em 1em;
    }

    #advantages_wrapper {
        padding-top: 1em;
        display: block;
    }

    #advantages_wrapper div {
        width: auto;
        padding: 1em;
        border-radius: 4px;
        box-shadow: 0 0 15px #DDD;
        text-align: justify;
        margin-bottom: 1em;
    }
}

#contact {
    padding-top: 3em;
    text-align: center;
}

#slides_wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.slides_control {
    display: inline-block;
    width: 20px;
    height: 20px;
    text-align: center;
    padding: 4px;
    background-color: #1F8D9B;
    border-radius: 50%;
    color: #FFF;
}

#slides_wrapper_main {
    padding-top: 2em;
}

.slideshow_main > img {
    width: 700px;
}