.knowledge-box{
    width: 100%;
    min-height: calc(100vh - 380px);
    display: block;
    position: relative;
    font-size: 0;
}
.knowledge-all-box{
    width: 800px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 105px 0;
}
.knowledge-all-title-box{
    text-align: center;
    margin-bottom: 30px;
}
.knowledge-all-title{
    font-size: 26px;
    font-weight: bold;
    color: #64bcc1;
    transform: skewX(-10deg);
    letter-spacing: 4px;
}
.knowledge-info-box{
    display: block;
    width: 100%;
    box-sizing: border-box;
    padding: 20px;
    border-bottom: 1px solid #ddd;
    transition: all .3s linear;
}
.knowledge-info{
    width: calc(100% - 80px);
    display: inline-block;
    vertical-align: middle;
}
.knowledge-info-title{
    font-size: 16px;
    font-weight: bold;
    letter-spacing: 3px;
}
.knowledge-info-writer{
    font-size: 14px;
    color: #555;
    letter-spacing: 3px;
    margin-top: 10px;
}
.knowledge-info-preview-icon,
.knowledge-info-dowmload-icon{
    font-size: 20px;
    display: inline-block;
    vertical-align: middle;
    color: #61942d;
    margin-left: 10px;
    text-align: center;
    cursor: pointer;
    transition: all .3s linear;
}
.knowledge-info-preview-icon span,
.knowledge-info-dowmload-icon span{
    font-size: 14px;
    display: block;
    letter-spacing: 1px;
}
.knowledge-info-preview-img{
    margin-top: 20px;
    display: none;
}



/*--------------------hover---------------------*/
.knowledge-info-box:hover{
    background-color: #eee;
}
.knowledge-info-preview-icon:hover,
.knowledge-info-dowmload-icon:hover{
    color: #64bcc1;
}


@media only screen and (max-width: 800px){
    .knowledge-box{
        min-height: calc(100vh - 370px);
    }
}
@media only screen and (max-width: 800px){
    .knowledge-all-box{
        width: 95%;
        padding: 55px 0;
    }
}
@media only screen and (max-width: 600px){
    .knowledge-box{
        min-height: calc(100vh - 245px);
    }
    .knowledge-all-box{
        padding: 35px 0;
    }
    .knowledge-all-title{
        font-size: 22px;
    }
    .knowledge-info-title{
        font-size: 14px;
    }
    .knowledge-info-writer{
        font-size: 12px;
    }
    .knowledge-all-title-box{
        margin-bottom: 15px;
    }
    .knowledge-info-preview-icon, .knowledge-info-dowmload-icon{
        font-size: 18px;
    }
}
@media only screen and (max-width: 400px){
    .knowledge-all-box{
        padding: 15px 0;
    }
    .knowledge-all-title-box{   
        margin-bottom: 5px;
    }
    .knowledge-info-box{
        padding: 10px;
    }
}


/*animation*/
/*<-------------動畫------------->*/

@media only screen and (min-width: 1001px){
    .knowledge-all-title,
    .knowledge-info-box{
        opacity: 0;
    }
    .knowledge-all-title.active{
        animation: animation_ttob_skewX 1s ease both;
    }
    .knowledge-info-box.active{
        animation: animation_fade 1s linear both;
    }
}