.inner {
  padding: 3em 0 10em 5em;
  display: flex;
  text-align: center;
}

.left,
.right {
  width: 600px;
  border: solid 1px;
  padding: 1em;
  text-align: left;
}

h2 {
  margin: 0 0 2em;
  font-size: 30px;
  font-weight: 700;
  color: blue;
}

.sec {
  padding: 0 0 2em;
  margin: 0;
}

h3 {
  padding: 0;
  font-size: 20px;
  font-weight: 700;
}

.contents {
  padding: 1em 0 0 2em;
  margin: 0;
}

.comment {
  padding: 1em 0 0;
  line-height: 1.5;
  font-size: 14px;
}

.title {
  margin: 3em 0 1em 1em;
}
.title h1 {
  padding: 0;
  font-size: 40px;
  font-weight: 700;
}
.title .by {
  padding: 2em 0 0 2em;
}
.title a {
  padding: 1em 0 0 2em;
}
.title a .link {
  display: inline-block;
  transition: all 0.3s ease 0s;
  cursor: pointer;
}
.title a .link:hover {
  color: #4caf50;
}

.sec1 .hover1 {
  display: inline-block;
  padding: 0.6em 2em;
  cursor: pointer;
  transition: all 0.3s ease 0s;
  background-color: #4caf50;
  color: #fff;
}
.sec1 .hover1 a {
  text-decoration: none;
  color: #fff;
}
.sec1 .hover1:hover {
  opacity: 0.6;
}

/*  */
.sec2 .hover2 {
  display: inline-block;
  padding: 0.6em 2em;
  cursor: pointer;
  transition: all 0.3s ease 0s;
  background: #fff;
  color: #333;
  border: 0.1875em solid #333;
}
.sec2 .hover2:hover {
  background: #333;
  color: #fff;
}

.sec3 .hover3 {
  display: inline-block;
  padding: 0.6em 2em;
  cursor: pointer;
  transition: all 0.3s ease 0s;
  border-bottom: 0.1875em solid #1b5e20;
  color: #fff;
  background-color: #4caf50;
}
.sec3 .hover3:hover {
  border-bottom-color: transparent;
  transform: translateY(0.1875em);
}

.sec4 .hover4 {
  display: inline-block;
  padding: 0.6em 2em;
  cursor: pointer;
  transition: all 0.3s ease 0s;
  box-shadow: 0 0 3px 0 rgba(0, 0, 0, 0.25);
  background-color: #4caf50;
  color: #fff;
}
.sec4 .hover4:hover {
  box-shadow: 0 3px 6px 0 rgba(0, 0, 0, 0.25);
  transform: translateY(-0.1875em);
}

.sec5 .hover5 {
  transition: all 1s linear 0s;
  border-radius: 50%;
  cursor: pointer;
}
.sec5 .hover5:hover {
  transform: rotateX(360deg);
}

.sec6 .hover6 {
  transition: all 1s linear 0s;
  border-radius: 50%;
  cursor: pointer;
}
.sec6 .hover6:hover {
  transform: rotateY(360deg);
}

.sec7 .hover7 {
  transition: all 1s linear 0s;
  border-radius: 50%;
  cursor: pointer;
}
.sec7 .hover7:hover {
  transform: rotateZ(360deg);
}

.sec8 .hover8 {
  transition: all 0.6s ease 0s;
  border-radius: 50%;
}
.sec8 .hover8:hover {
  cursor: pointer;
  transform: scale(1.1, 1.1);
}

.sec201 .hover1 a {
  text-decoration: none;
  color: #f70303;
  transition: color 0.3s;
  cursor: pointer;
}
.sec201 .hover1 a:hover {
  color: #eeb6b6;
}

.sec202 .hover2 a {
  text-decoration: none;
  color: #f70303;
  transition: all 0.3s;
}
.sec202 .hover2 a:hover {
  color: #fff;
  background-color: #2ecc71;
}

.sec203 .hover3 a {
  text-decoration: none;
  color: #f70303;
  transition: 0.3s;
  display: inline-block;
  transform: scale(1);
}
.sec203 .hover3 a:hover {
  transform: scale(1.1);
}

.sec204 .hover4 a {
  text-decoration: none;
  color: #f70303;
  display: inline-block;
}
.sec204 .hover4 a:hover {
  -webkit-animation: zoom 0.3s;
  animation: zoom 0.3s;
}
@-webkit-keyframes zoom {
  50% {
    -webkit-transform: scale(1.05);
  }
}
@keyframes zoom {
  50% {
    transform: scale(1.05);
  }
}

.sec205 .hover5 a {
  text-decoration: none;
  color: #f70303;
  display: inline-block;
  transition: 0.3s;
}
.sec205 .hover5 a:hover {
  transform: rotate(5deg);
}

.sec206 .hover6 a,
.sec206 .hover6 a span {
  text-decoration: none;
  color: #f70303;
  display: inline-block;
}
.sec206 .hover6 a span {
  transition: 0.5s;
}
.sec206 .hover6 a:hover span {
  transform: rotateX(360deg);
}

.sec207 .hover7 a {
  text-decoration: none;
  color: #f70303;
  display: inline-block;
  perspective: 1000px;
  perspective-origin: 50% 50%;
  vertical-align: bottom;
  overflow: hidden;
}
.sec207 .hover7 a span {
  display: inline-block;
  position: relative;
  padding: 0 0.3em;
  transition: 0.4s;
  transform-origin: 50% 0%;
  transform-style: preserve-3d;
}
.sec207 .hover7 a span:after {
  display: inline-block;
  position: absolute;
  left: 0;
  top: 0;
  content: attr(data-text);
  padding: 0 0.3em;
  color: #fff;
  background-color: #2ecc71;
  transform-origin: 50% 0%;
  transform: translate3d(0, 105%, 0) rotateX(-90deg);
}
.sec207 .hover7 a:hover span {
  background-color: #2ecc71;
  transform: translate3d(0, 0, -30px) rotateX(90deg);
}

.sec208 .hover8 a {
  text-decoration: none;
  color: #f70303;
  padding: 0 3em;
  background-image: linear-gradient(to right, rgba(0, 0, 0, 0) 50%, #2ecc71 50%);
  background-position: 0 0;
  background-size: 200% auto;
  transition: 0.3s;
}
.sec208 .hover8 a:hover {
  color: #fff;
  background-position: -100% 0;
}
.sec208 .hover8-1 a {
  text-decoration: none;
  color: #f70303;
  padding: 0 3em;
  background-image: linear-gradient(to right, rgba(0, 0, 0, 0) 50%, #2ecc71 50%);
  background-position: 0 0;
  background-size: 200% auto;
  transition: 0.3s;
}
.sec208 .hover8-1 a:hover {
  color: #fff;
  background-position: 100% 0;
}

.sec209 .hover9 a {
  text-decoration: none;
  color: #f70303;
  padding: 0 0.3em;
  background-image: linear-gradient(rgba(0, 0, 0, 0) 50%, #2ecc71 50%);
  background-position: 0 0;
  background-size: auto 200%;
  transition: 0.3s;
}
.sec209 .hover9 a:hover {
  color: #fff;
  background-position: 0 100%;
}

.sec210 .hover10 a {
  text-decoration: none;
  color: #f70303;
  transition: 0.3s;
}
.sec210 .hover10 a span {
  display: inline-block;
}
.sec210 .hover10 a:hover span {
  transform: rotateY(360deg);
  transition: 0.6s;
}
.sec210 .hover10 a:hover span:nth-of-type(1) {
  transition-delay: 0.02s;
}
.sec210 .hover10 a:hover span:nth-of-type(2) {
  transition-delay: 0.04s;
}
.sec210 .hover10 a:hover span:nth-of-type(3) {
  transition-delay: 0.06s;
}

.sec211 h3 span {
  border-bottom: solid 2px;
}
.sec211 .hover11 a {
  text-decoration: none;
  color: #f70303;
  transition: 2.3s;
  position: relative;
  display: inline-block;
}
.sec211 .hover11 a:after {
  position: absolute;
  bottom: 0.3em;
  left: 0;
  content: "";
  width: 100%;
  height: 3px;
  background-color: #2ecc71;
  transition: 2.3s;
  opacity: 0;
}
.sec211 .hover11 a:hover {
  color: #2ecc71;
}
.sec211 .hover11 a:hover::after {
  bottom: 0em;
  opacity: 1;
}

.sec212 h3 span {
  border-bottom: solid 2px;
}
.sec212 .hover12 a {
  text-decoration: none;
  color: #f70303;
  transition: 2.3s;
  position: relative;
  display: inline-block;
}
.sec212 .hover12 a::after {
  position: absolute;
  bottom: 0;
  left: 0;
  content: "";
  width: 0;
  height: 3px;
  background-color: #2ecc71;
  transition: 2.3s;
}
.sec212 .hover12 a:hover {
  color: #2ecc71;
}
.sec212 .hover12 a:hover::after {
  width: 100%;
}

.sec213 h3 span {
  border-bottom: solid 2px;
}
.sec213 .hover13 a {
  text-decoration: none;
  color: #f70303;
  transition: 2.3s;
  position: relative;
  display: inline-block;
}
.sec213 .hover13 a::before,
.sec213 .hover13 a::after {
  position: absolute;
  content: "";
  width: 0;
  height: 3px;
  background-color: #2ecc71;
  transition: 2.3s;
}
.sec213 .hover13 a::before {
  top: 0;
  left: 0;
}
.sec213 .hover13 a::after {
  bottom: 0;
  right: 0;
}
.sec213 .hover13 a:hover {
  color: #2ecc71;
}
.sec213 .hover13 a:hover::before,
.sec213 .hover13 a:hover::after {
  width: 100%;
}

.sec214 h3 span {
  border-bottom: solid 2px;
}
.sec214 .hover14 a {
  text-decoration: none;
  color: #f70303;
  transition: 2.3s;
  position: relative;
  display: inline-block;
}
.sec214 .hover14 a::after {
  position: absolute;
  bottom: 0;
  left: 50%;
  content: "";
  width: 0;
  height: 3px;
  background-color: #2ecc71;
  transition: 2.3s;
  transform: translateX(-50%);
}
.sec214 .hover14 a:hover {
  color: #2ecc71;
}
.sec214 .hover14 a:hover::after {
  width: 100%;
}

.sec215 h3 span {
  border-bottom: solid 2px;
}
.sec215 .hover15 a {
  text-decoration: none;
  color: #f70303;
  transition: 2.3s;
  position: relative;
  display: inline-block;
}
.sec215 .hover15 a::before,
.sec215 .hover15 a::after {
  position: absolute;
  content: "";
  width: 0;
  height: 3px;
  background-color: #2ecc71;
  transition: 2.3s;
  left: 50%;
  transform: translateX(-50%);
}
.sec215 .hover15 a::before {
  top: 0;
}
.sec215 .hover15 a::after {
  bottom: 0;
}
.sec215 .hover15 a:hover {
  color: #2ecc71;
}
.sec215 .hover15 a:hover::before,
.sec215 .hover15 a:hover::after {
  width: 100%;
}