html, body {
  width: 100vw;
  overflow-x: hidden;
}

.center-block{
  width: 100%;
  padding: 0 15px;
}

.app-contens{
  width: 100%;
  margin-top: 40px;

}

.app-contens-item .app-block-item .app-block-sub-items{
  flex-direction: column;
}

.app-contens-item .app-block-item .app-block-sub-items .block-sub-items-img{
  width: 100%;
  margin-bottom: 15px;
}

.app-contens-item .app-block-item .block-sub-items-top{
  margin-top: 0;
}

.app-contens-item .app-block-item .app-block-sub-items .block-sub-items-img img{
  width: 100%;
  padding: 0 15px;
}