Как сделать так, чтобы футер прилипал к низу страницы и не закрывал содержимое

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

h1 {
  color: #333;
  font-family: Arial, Helvetica, sans-serif;
}

header {
  position: Sticky;
  background: #3a8ace;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: 0.6s;
  padding: 20px 50px;
}

header .name {
  position: relative;
  font-weight: 800;
  color: #333;
  text-decoration: none;
  font-size: 2em;
  text-transform: uppercase;
  align-items: center;
}

header .navbar ul {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  list-style: none;
}

header .navbar ul li {
  position: relative;
  float: left;
}

header .navbar ul li a {
  position: relative;
  margin: 0 15px;
  text-decoration: none;
  font-size: 18px;
  padding: 5px;
  color: #333;
  display: block;
}

.active,
.a:hover {
  background-color: #666;
  color: white;
}

header .navbar ul li a:hover {
  background: #333;
  color: #fff;
}

header .navbar ul li ul {
  /*     position: absolute; */
  left: 0;
  width: 200px;
  background: #fff;
}

#menu-bar {
  display: none;
}

header label {
  font-size: 20px;
  color: #333;
  cursor: pointer;
  display: none;
}

h1 {
  color: #333;
}

.topic {
  margin: auto;
  width: 60%;
  padding: 10px;
  text-align: center;
}

@media only screen and (max-width: 620px) {
  /* For mobile phones: */
  .menu,
  .main,
  .right {
    width: 100%;
  }
  @media (max-width: 991px) {
    main {
      margin-top: 80px;
    }
    header {
      padding: 30px;
    }
    header label {
      display: initial;
    }
    header .navbar {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: #fff;
      border-top: 1 px solid rgba(0, 0, 0, 0.1);
    }
    header .navbar ul li {
      width: 100%;
    }
    header .navbar ul li ul {
      position: relative;
      width: 100%;
    }
    #menu-bar:checked~.navbar {
      display: initial;
    }
  }
}

body {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  margin-top: auto 0;
  margin-bottom: auto 0;
  background: #F6F6F6;
  font-family: 'Poppins', sans-serif;
}

.contact-in {
  width: 80%;
  height: auto;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
  padding: 10px;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0px 0px 10px 0px #666;
}

.contact-map {
  width: 100%;
  height: auto;
  flex: 50%;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
}

.contact-form {
  width: 100%;
  height: auto;
  flex: 50%;
  text-align: center;
}

.contact-form h1 {
  margin-bottom: 10px;
}

.contact-form-txt {
  width: 100%;
  height: 40px;
  color: #000;
  border: 1px solid #bcbcbc;
  border-radius: 50px;
  outline: none;
  margin-bottom: 20px;
  padding: 15px;
}

.contact-form-txt::placeholder {
  color: #aaa;
}

.contact-form-textarea {
  width: 100%;
  height: 130px;
  color: #000;
  border: 1px solid #bcbcbc;
  border-radius: 10px;
  outline: none;
  margin-bottom: 20px;
  padding: 15px;
  font-family: 'Poppins', sans-serif;
}

.contact-form-textarea::placeholder {
  color: #aaa;
}

.contact-form-btn {
  width: 100%;
  border: none;
  outline: none;
  border-radius: 50px;
  background: #3a8ace;
  color: #fff;
  text-transform: uppercase;
  padding: 10px 0;
  cursor: pointer;
  font-size: 18px;
}

footer {
  width: 100%;
  bottom: 0;
  left: 0;
  background: #111;
}

footer .content {
  max-width: 1350px;
  margin: auto;
  padding: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

footer .content p,
a {
  color: #fff;
}

footer .content .box {
  width: 33%;
  transition: all 0.4s ease;
}

footer .content .topic {
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

footer .content p {
  text-align: justify;
}

footer .content .lower .topic {
  margin: 24px 0 5px 0;
}

footer .content .lower i {
  padding-right: 16px;
}

footer .content .middle {
  padding-left: 80px;
}

footer .content .middle a {
  line-height: 32px;
}

footer .content .right input[type = "text"] {
  height: 45px;
  width: 100%;
  outline: none;
  color: #d9d9d9;
  background: #000;
  border-radius: 5px;
  padding-left: 10px;
  font-size: 17px;
  border: 2px solid #222222;
}

footer .content .right input[type = "submit"] {
  height: 42px;
  width: 100%;
  font-size: 18px;
  color: #d9d9d9;
  background: #eb2f06;
  outline: none;
  border-radius: 5px;
  letter-spacing: 1px;
  cursor: pointer;
  margin-top: 12px;
  border: 2px solid #eb2f06;
  transition: all 0.3s ease-in-out;
}

.content .right input[type = "submit"]:hover {
  background: none;
  color: #eb2f06;
}

footer .content .media-icons a {
  font-size: 16px;
  height: 45px;
  width: 45px;
  display: inline-block;
  text-align: center;
  line-height: 43px;
  border-radius: 5px;
  border: 2px solid #222222;
  margin: 30px 5px 0 0;
  transition: all 0.3s ease;
}

.content .media-icons a:hover {
  border-color: #eb2f06;
}

footer .bottom {
  width: 100%;
  text-align: right;
  color: #d9d9d9;
  padding: 0 40px 5px 0;
}

footer .bottom a {
  color: #eb2f06;
}

footer a {
  transition: all 0.3s ease;
}

footer a:hover {
  color: #eb2f06;
}

@media (max-width:1100px) {
  footer .content .middle {
    padding-left: 50px;
  }
}

@media (max-width:950px) {
  footer .content .box {
    width: 50%;
  }
  .content .right {
    margin-top: 40px;
  }
}

@media (max-width:560px) {
  footer {
    position: relative;
  }
  footer .content .box {
    width: 100%;
    margin-top: 30px;
  }
  footer .content .middle {
    padding-left: 0;
  }
}

main {
  padding: 1em 0;
  width: 100%;
}

<!DOCTYPE html>
<html>

<head>
  <meta charset = "utf-8">
  <meta name = "viewport" content = "width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no">
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  <link rel = "stylesheet" href = "contact.css">
  <link rel = "preconnect" href = "https://fonts.googleapis.com">
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  <link href = "https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap" rel = "stylesheet">
</head>

<body>
  <header>
    <a href = "https://ecj.com.jm/"> <img src = "img/ecjLogo.png" id = "logo"> </a>
    <center>
      <div class = "name"> ECJ </div>
    </center>
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    <nav class = "navbar">
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  <div class = "contact-in">
    <div class = "contact-map">
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        width = "100%" height = "auto" style = "border:0;" allowfullscreen = "" loading = "lazy" referrerpolicy = "no-referrer-when-downgrade"></iframe>
    </div>

    <div class = "contact-form">
      <h1> Contact Us</h1>
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      <p>Toll-Free: 1-888-991-VOTE(8683)</p>
      <p>Fax: (876)-922-4058</p><br>
      <p>Email: [email protected]</p>
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      <form action = "mailto:[email protected]" method = "get" enctype = "text/plain">
        Subject: <br>
        <input type = "text" name = "subject" placeholder = "Your Full Name" class = "contact-form-txt" required> <br> Email: <br>
        <input type = "email" name = "email" placeholder = "Work Email" class = "contact-form-txt" required><br> Message:
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        <textarea id = "Message" name = "Message" class = "contact-form-textarea" rows = "6" maxlength = "3000" required cols = "30" placeholder = "Your Message"></textarea><br>
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