Edit in JSFiddle

p{
    width: 200px;
    border: solid 1px grey;
}

.break-word{
    word-wrap: break-word;
}

.break-all{
    word-break: break-all;
}

<p>
    Oooohhh.AslongaswegoteachotherWegottheworldspinninright inourhands.
</p>
<br />
<p class="break-all">
    Oooohhh. As longaswegoteachother. Wegottheworldspinninright inourhands.
</p>
<br />
<p class="break-word">
    Oooohhh. As longaswegoteachother. Wegottheworldspinninright inourhands.
</p>