.input-group > .custom-select:not(:last-child), .input-group > .form-control:not(:last-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}
.tab-content .tab-pane img {
    border-top-right-radius: 8px !important;
    border-bottom-right-radius: 8px !important;
}
.article-item footer .col-lg-4 span:first-child {
    margin-right: 5px;
}
#article-container hr {
    float: left;
}
.question-btn {
    position: fixed;
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: auto;
    left: 20px;
    animation: pulse 2s infinite;
}