timelinestyle.py

class TimelineStyle:
    def __init__(self):
        self.style = """
        * {
        box-sizing: border-box;
        }

        body {
        background-color: #474e5d;
        font-family: Helvetica, sans-serif;
        }

        .timeline {
        position: relative;
        max-width: 1200px;
        margin: 0 auto;
        }

        .timeline::after {
        content: '';
        position: absolute;
        width: 6px;
        background-color: white;
        top: 0;
        bottom: 0;
        left: 50%;
        margin-left: -3px;
        }

        .container {
        padding: 10px 40px;
        position: relative;
        background-color: inherit;
        width: 50%;
        }

        .container::after {
        content: '';
        position: absolute;
        width: 25px;
        height: 25px;
        right: -17px;
        background-color: white;
        border: 4px solid #FF9F55;
        top: 15px;
        border-radius: 50%;
        z-index: 1;
        }

        .left {
        left: 0;
        }

        .right {
        left: 50%;
        }

        .left::before {
        content: " ";
        height: 0;
        position: absolute;
        top: 22px;
        width: 0;
        z-index: 1;
        right: 30px;
        border: medium solid white;
        border-width: 10px 0 10px 10px;
        border-color: transparent transparent transparent white;
        }

        .right::before {
        content: " ";
        height: 0;
        position: absolute;
        top: 22px;
        width: 0;
        z-index: 1;
        left: 30px;
        border: medium solid white;
        border-width: 10px 10px 10px 0;
        border-color: transparent white transparent transparent;
        }

        .right::after {
        left: -16px;
        }

        .content {
        padding: 20px 30px;
        background-color: white;
        position: relative;
        border-radius: 6px;
        }

        @media screen and (max-width: 600px) {
        /* Place the timelime to the left */
        .timeline::after {
        left: 31px;
        }
        
        .container {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
        }
        
        .container::before {
        left: 60px;
        border: medium solid white;
        border-width: 10px 10px 10px 0;
        border-color: transparent white transparent transparent;
        }

        .left::after, .right::after {
        left: 15px;
        }
        
        .right {
        left: 0%;
        }
    }"""
    
    def get_style(self):        
        return self.style