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0}h1,h2,h3,h4{margin-bottom:20px;line-height:1.2}h1{font-size:2.5rem}.titleh2{font-size:2rem;text-align:center;margin-bottom:50px;position:relative}.titleh2:after{content:"";position:absolute;bottom:-15px;left:50%;transform:translate(-50%);width:80px;height:4px;background-color:var(--primary-color)}a{text-decoration:none;color:var(--primary-color);transition:var(--transition)}a:hover{color:var(--accent-color)}.btn{display:inline-block;background-color:var(--primary-color);color:var(--white);padding:10px 20px;border-radius:5px;transition:var(--transition);border:none;cursor:pointer;font-size:1rem}.btn:hover{background-color:var(--secondary-color);color:var(--white);transform:translateY(-3px);box-shadow:var(--box-shadow)}@media (max-width: 768px){.hero h1{font-size:2.5rem}section{padding:60px 0}}