body {
font-family: "Arial", sans-serif;
margin: 0;
padding: 0;
box-sizing: border-box;
}
a {
    color: #fff;  
    }
.container  {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.course-container {
margin: 0px 10px;
}

.all-courses {
    display: flex; 
}

header {
    background-color:#2c3e50;
    color: #ecf0f1; 
    padding: 20px 0;
}
header h1,
    nav {
        text-align: center;
    }
    nav ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        justify-content: center;
        }
    nav ul li {
        display: inline;
        margin-right: 10px; 
    }
    nav a {
        text-decoration: none;
        color: #ecf0f1;
        font-weight: bold;
        transition: 300ms all;
    }
nav a:hover {
    border-bottom: 1px solid #fff;
}
main {
    background-color: #ecf0f1;
    padding: 20px 0px;
}
.hero {
    text-align: center;
    padding: 40px 0px;
    }
.hero h2 {
    color: #2c3e50;
}
.cta-button {
    display: inline-block;
    background-color: #3498db;
    color: #ecf0f1; 
    padding: 10px 20px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    transition: 300ms all;
    }
.cta-button:hover {
    background-color: #2980b9;
}
.courses {
    padding: 40px 0px;
    }
.course {
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    padding: 10px;
    border: 1px solid tranparent;
    border-radius: 4px;
    cursor: pointer;
    transition: 300ms all;
}
.course:hover {
    border-color: aqua;

}
.course img {
    max-width: 200px;
    height: auto;
    border-radius: 5px;
    margin-right: 20px;  
}
.course-info {
    flex-grow: 1;/* Bu içeriği Resimden sonra tam genişlikte yayar. */
}
.course h3 {
    margin: 0;
    color: #2c3e50;
}
.course p {
    margin: 0;
    color: #7f8c8d;
}

footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 20px 0;
    text-align: center; 
}