On mobile the top nav bar is being overlapped by body content, and the same occurs when opening the sidenav hamburger menu.

I need help ensuring that the top nav is not being overlapped and when the sidenav menu is opened, it is on top of everything.

/*BEGIN SIDE NAV*/
.sidenav {
  height: 100%;
  position: fixed;
  z-index: 999;
  top: 0;
  left: -500px;
  background: #295a8f;
  background-repeat: no-repeat;
  background-size: cover;
  overflow-x: hidden;
  padding-top: 60px;
  transition: 0.2s;
  -webkit-transition: 0.2s;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23);
  width: 250px;
}
.sidenav a:hover, .sidenav a:focus {
  color: #000;
  text-decoration: none;
  padding-left: 40px;
}
.sidenav .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}
.sidenav a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 12px;
  color: #fff;
  display: block;
  transition: 0.3s;
  text-transform: uppercase;
}
.mobilecontainer span {
  color: #295a8f;
  margin-right: 10px;
  margin: 0px 9px;
  padding: 10px 0;
  position: relative;
  z-index: 1;
}
.mobilecontainer img {
  width: 63px;
  margin: -19px 0;
  position: relative;
  z-index: 1;
}
.mobilecontainer {
  background-color: #fff;
  padding-left: 20px;
}
/*END SIDE NAV*/

/*BEGIN: HEADER*/
.navbar-set li a {
    color: #003333;
    font-size: 16px;
    padding: 0 8px;
}
.navbar-set li a:hover{
  color: #2194cb;
}
ul.social li:hover a {
    color: #ccc;
}
ul.social li.icons {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 5px;
    border-radius: 100%;
}

ul.social li.icons a {
    color: #fff;
        font-size: 20px;
}
 ul.social li.fb.icons {
    background: #072e82;
}

ul.social li.tw.icons {
    background: #09a8ff;
}
ul.social li.ins.icons {
    background: #0070af;
}

 ul.social li.gplus.icons {
    background: #ff0000;
}
 ul.social {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin: 10px 0;
}
header {
    padding: 15px 0;
}
.navbar-set li.quote-btn {
    padding: 10px;
    border-radius: 10px;
}

.navbar-set li.quote-btn a {
    color: #fff;
    text-transform: uppercase;
    font-size: 16px;
    font-weight: bold;
}
.navbar-set li.active a {
    font-weight: 800;
    border-bottom: 2px solid #2194cb;
    padding-bottom: 4px;
}
/*END: HEADER*/

The page I need help with: [log in to see the link]