.research_head {
    padding-top: 4%;
}

.research_head-des h1 {
    font-size: clamp(2.5em, 5vw, 4.2em);
    /* font-family: var(--bold-font); */
    text-wrap: wrap;
    line-height: 1.2;
}

.research_head-image {
    border-radius: 20px;
    overflow: hidden;
}

.research_head-des h4 {
    line-height:1.5;
    font-family: var(--bold-font);
    font-size: clamp(1em,4vw,1.4em);
}
.des-content p {
    font-family: var(--primary-font);
    text-wrap:pretty;
}
.research_second {
    margin: 3% 0;
    padding: 3% 0;
    background-color: var(--third-color);
}

.research_second-item {
    color: var(--second-color);
}
.research_second-item .display-4 {
    font-size: clamp(1.3em,4vw,2em);
}
.research_third h2 {
    line-height: 1.4;
}

.research_third ul {
    text-align: justify;
    display: flex;
    flex-wrap: wrap;
}
.research_third ul li{
    flex: 1;
    min-width: 50%;
    padding: 0 15px;
}

.research_element-item {
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    margin-bottom: 9%;
}

p.research_element-name {
    position: absolute;
    bottom: 0;
    width: 100%;
    text-align: center;
    margin: 0;
    line-height: 4;
    background-image: linear-gradient(to top, var(--primary-color), transparent);
}
.research_element {
    margin-top: 4%;
}
.other_research {
    margin-top: 5%;
}
.other_item {
    border-top: 3px solid var(--third-color);
}

.other_item p {
    padding-top: 5%;
    font-family: var(--bold-font);
}
.research_info h4 {
    font-family: var(--bold-font);
}

span.title_element {
    font-family: var(--bold-font);
}
.chidinh {
    padding: 2%;
    border: 3px solid var(--primary-color);
    display: inline-block;
    border-radius: 8px;
    color: var(--primary-color);
    font-family: var(--bold-font);
}
@media(max-width:575px)
{
    .research_head-des h1{font-size: 18pt;}
    .research_third ul {
        columns: 1;
    }
    .research_third ul li{
        min-width: 100%;
        padding: 0 0;
    }
    .research_element .col-xs-6:nth-child(2n+1){
        clear: both;
    }
    .col-one .research_second-item{font-size: 14px;}
}