* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    text-decoration: none;
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6,
div,
p,
a {
    margin: 0px;
    padding: 0px;
}

#tophead {
    background-color: #000;
}

.head-logo a {
    color: #FFFFFF;
}

.head-logo a:hover {
    color: #FFFFFF;
    text-decoration: none;
}

.installation-attention{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;

  margin-bottom: 40px;
}

.installation-attention img{
  width: 20px
}

.installation-page:last-child {
    margin-bottom: 120px;
}

.installation-title {
    margin-top: 40px;
    margin-bottom: 50px;
    padding: 40px;
    border-bottom: 1px solid #35424C;

    text-align: center;
}

.installation-title h3 {
    font-family: Helvetica;
    font-size: 50px;
}

.installation-guide-number {
    padding: 20px;
    background-color: #FFFFFF;
    box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
    border-radius: 5px;

    font-size: 24px;
    color: #00468E;
    font-weight: 300;
    display: flex;

    justify-content: center;
    align-items: center;
    margin-bottom: 50px;
}

.installation-guide-list {
    display: flex;
    -webkit-display: flex;
    flex-wrap: wrap;
    -webkit-flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
    -webkit-justify-content: center;

    max-width: 100%;
    margin-bottom: 30px;
}

.installation-guide-list a {
    object-fit: cover;
    cursor: pointer;
}

.installation-guide-list a img,
.installation-guide-list img {
    width: calc(33.33% - 20px);
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 5px;
}

.warning-paragraph {
  display: flex;
  gap: 20px
}

.warning-paragraph img{
  width: 30px;
  height: 30px;
  display: block;
}

.warning-paragraph .text{
  font-size: 24px;
}

@media only screen and (max-width:600px) {

    .installation-guide-list img {
        width: 100%;
    }
    .installation-attention{
      flex-direction: column;
    }
}

.disclaimer-popup {
  position: fixed;
  width: 100%;
  height: 100%;
  left: 0;

  top: 0;
  display: none;
}
.disclaimer-popup.active{
 display: block;
}
.disclaimer-popup .popup-background{
  background-color: rgba(0, 0, 0, 0.3);
  width: 100%;
  height: 100%;
}
.disclaimer-popup .popup-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);

  background: rgba(128, 164, 204, 1);
  color: white;
  font-size: 24px;
  padding: 10px;

  width: 80%;
  max-width: 1100px;
  border-radius: 8px;
}
.disclaimer-popup .popup-content .close-button {
  position: absolute;
  background-color: black;
  border-radius: 50%;
  right: 0;

  top: 0;
  color: white;
  width: 30px;
  height: 30px;

  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}
.disclaimer-popup .popup-content .content{
  display: flex;
  gap: 10px;
}
.disclaimer-popup .popup-content .content img{
  width: 30px;
  height: 30px;
}