body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ececec;
    color: #333;
}
header {
    background: #333;
    color: #fff;
    padding: 10px 20px;
    text-align: center;
}
.topnav {
    background-color: #333;
    overflow: hidden;
    padding-left: 10%;
    padding-right: 10%;
}
  
  /* Style the links inside the navigation bar */
.topnav a {
    float: left;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
}
  
  /* Change the color of links on hover */
.topnav a:hover {
    background-color: #ddd;
    color: black;
  }
  
  /* Add a color to the active/current link */
.topnav a.active {
    background-color: #04AA6D;
    color: white;
}

.topnav-contacts {
    background-color: #333;
    overflow: hidden;
    float: right;
}

.topnav-contacts a {
    color: #f2f2f2;
    text-align: center;
    padding: 0px;
    text-decoration: none;
    display: flex;
    height: 47px;
    width: 47px;
}

.topnav-contacts img {
    position: relative;
    height: 34px;
    margin: auto;
}

.top-background {
    background: #333;
    height: 100px;
    display: flex;
    justify-content: center; 
    overflow: hidden;
    position: relative;
}

.top-background img {
    position: absolute;
    top: 50%;
    left: 50%;
    width: auto;
    min-width: 100%;
    min-height: auto;
    transform: translate(-50%, -50%);
}

.main-container-background {
    
}

.main-container {
    margin-left: 10%;
    margin-right: 10%;
    background-color: #ececec;
}

.text-field p {
    font-size: 18px;
}

.text-field ul {
    font-size: 18px;
}

.text-field li {
    margin-bottom: 6px;
}

.text-field h1 {
    font-size: 30px;
    margin-top: 20px;
    margin-bottom: 10px;
}

.text-field h2 {
    font-size: 25px;
    margin-top: 12px;
    margin-bottom: 8px;
}

.text-field h3 {
    font-size: 22px;
    margin-top: 10px;
    margin-bottom: 6px;
}

.text-field h4 {
    font-size: 19px;
    margin-top: 8px;
    margin-bottom: 4px;
}