html,
body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  font-family: 'Open Sans', sans-serif;
  background-color: #f2f2f2;
}

main {
  flex: 1;
  padding: 100px 0 30px;
}

main p {
  text-align: justify;
}

main p:last-of-type {
  margin-bottom: 0;
}

footer {
  padding: 15px 0;
  text-align: center;
  background-color: #fff;
  box-shadow: 0 -5px 15px rgba(0,0,0,.5);
}

.smm {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  background-color: #fff;
  box-shadow: 0 5px 15px rgba(0,0,0,.5);
}

.smm ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.smm li {
  display: inline-block;
  position: relative;
}

.smm li > a {
  display: block;
  position: relative;
  padding: 6px 12px;
  color: #333;
}

.smm li > a:focus,
.smm li > a:hover {
  color: #000;
  text-decoration: none;
}

.smm__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 0;
  transition: background .4s ease, padding .4s ease;
}

.smm__logo-wrapper {
  margin: 0;
  transition: margin .4s ease;
}

.smm__toggle {
  border-radius: 0;
  border-color: #999;
}

.smm__toggle:focus,
.smm__toggle:hover,
.smm__toggle:active,
.smm__toggle:active:hover {
  color: #333;
  background-color: #fff;
  border-color: #999;
  box-shadow: none;
  outline: none;
}

.smm__collapse {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-grow: 1;
  padding-left: 30px;
}

.smm__primary-menu li > a:after {
  content: '';
  position: absolute;
  height: 2px;
  right: 12px;
  bottom: 4px;
  left: 12px;
  background-color: #d43f3a;
  transform: scale(0,1);
  transition: transform .25s ease;
}

.smm__primary-menu li:focus > a:after,
.smm__primary-menu li:hover > a:after {
  transform: scale(1,1);
}

.smm__primary-menu li > a > .fa {
  margin-right: 6px;
}

.smm__secondary-menu li:before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  border-radius: 3px;
  transform: scale(0);
  transition: transform .25s ease;
}

.smm__secondary-menu li:nth-child(1):before {
  background-color: #3a559f;
}

.smm__secondary-menu li:nth-child(2):before {
  background-color: #dc3489;
}

.smm__secondary-menu li:nth-child(3):before {
  background-color: #55acee;
}

.smm__secondary-menu li:nth-child(4):before {
  background-color: #0077b5;
}

.smm__secondary-menu li:focus:before,
.smm__secondary-menu li:hover:before {
  transform: scale(1);
}

.smm__secondary-menu li:focus > a,
.smm__secondary-menu li:hover > a {
  color: #fff;
}

.smm__secondary-menu li > a {
  font-size: 1.142em;
  transition: color .25s ease;
}