.container{max-width:1200px;padding:10px;margin:0 auto}.portfolio{display:flex;flex-direction:column;row-gap:20px;width:100%;margin:0 auto;padding:20px}.toolbar-list{list-style:none;display:flex;justify-content:start;align-items:center}.toolbar-list-elem:not(:last-child){margin-right:10px}.btn-category{background-color:#fff;height:50px;border:2.5px solid gray;color:gray;font-size:1.2rem;cursor:pointer;padding:10px 20px;display:flex;justify-content:center;align-items:center;transition:border 1s}.btn-category:hover{border:2.5px solid black}.btn-category_selected{background-color:gray;color:#fff}.projects-list{list-style:none}.project-elem{break-inside:avoid;margin-bottom:20px}.project-img{width:100%;height:auto;display:block}@media (min-width: 634px){.projects-list{max-width:634px;column-count:2}}@media (min-width: 940px){.projects-list{max-width:940px;column-count:3}}