:root{
    --accent-color:rgba(27, 52, 163, 0.849);
    font-size: 2vmin;
}

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    width: 100vw;
    height: 100vh;
    /* 网格布局 */
    display: grid;
    place-items: center;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    /*background-color: hsla(105, 2%, 65%, 0.801);*/
}

.calendar{
    width: 90vw;
    /* 禁止用户选择文本内容 */
    user-select: none;
}

.header{
    display: flex;
    justify-content: space-evenly;
    margin-bottom: 10px;
}

.header button{
    border: 2px solid transparent;
    outline: none;
    background-color: transparent;
    cursor: pointer;
    padding: 0 10px;
    /* 过渡 */
    transition: all o.3s;
    font-size: 1.3rem;
}

.header button:hover{
    /* 函数替换 */
    border: 2px solid var(--accent-color);
}

.currentDate{
    font-size: 3rem;
    font-weight: bold;
    color: var(--accent-color);
    text-align: center;
    min-width: 28vmin;

}
/* days */
.days{
    display: flex;
    justify-content: space-around;
    text-align: center;
    padding: 20px 0;
    font-size: 1.2rem;
    color: var(--accent-color);
    

}

.dates{
    display: grid;
    grid-template-columns: repeat(7,1fr);
    gap: 8px;
}

.date{
    text-align: center;
    padding: 0 0;
    font-size: 1rem;
    transition:  all 0.3s;
    border:  3px solid transparent;
    cursor: pointer;
    background-color: transparent;
    box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.1);
    color: rgba(0, 0, 0, 0.3);
}
.date.currentMonth{
    color:#000;

}
.date:hover,
.date.selected {
    border-color: var(--accent-color);
}
.date.selected {
   background-color: var(--accent-color);
    color:#fff;
}
.dateH{
	
	text-align: center;
  padding: 0 0;
  font-size: 1rem;
  transition:  all 0.3s;
  border:  3px solid transparent;
  cursor: pointer;
  background-color: yellow;
  box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.1);
  color: rgba(0, 0, 0, 0.3);	
}
.dateH.currentMonth{
    color:#000;

}
.dateH:hover,
.dateH.selected {
    border-color: var(--accent-color);
}
.dateH.selected {
   background-color: var(--accent-color);
    color:#fff;
}